seam agate

Presenting the crown jewel of the Pedra Gems collection — our Natural Seam Agate XL Oval Cabochon, a breathtaking 29x20x3mm gemstone weighing a full 20 carats. This is the largest, heaviest, and most magnificent stone we offer — a once-in-a-collection natural treasure of extraordinary scale and beauty.

At 29x20mm this oval is genuinely large — roughly the size of a large walnut and larger than most standard brooch blanks. The near 1.5:1 length-to-width ratio produces a beautifully balanced, full-bodied oval that displays the natural Seam Agate banding across a canvas of exceptional scale. Every layer, every band, every colour variation is visible in generous, sweeping detail that smaller stones simply cannot reveal.

The 6mm dome rises confidently above the surface, adding extraordinary visual depth and a rich, three-dimensional quality that makes the banding appear to glow from within. At 20 carats the stone carries a weight and substance in the hand that immediately communicates premium natural quality to any experienced collector or jeweller.

✦ Stone Specifications:
• Shape: Oval
• Dimensions: 29x20x3 mm
• Weight: 20 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, deep domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.

✦ Perfect For:
• Large statement brooch & pin centrepiece
• Bespoke commission jewellery — ring, cuff, pendant, collar
• Statement cuff bracelet focal stone
• Large wire wrapping & oversized bezel settings
• Electroforming & large copper wrap projects
• Display & museum-quality collector piece
• Crystal healing — the largest healing stone in the Pedra Gems range
• Interior design & decorative gemstone display
• Investment-grade natural gemstone collection

✦ Scale & Presence:
To appreciate the scale of this stone — at 29mm it is larger than a standard US quarter dollar (20mm) in both dimensions. In a brooch setting it would command the full focal point of any outfit. In a wire-wrapped pendant it would be a dramatic, statement piece that draws attention from across a room.

At 20 carats this is almost four times the weight of our standard 20ct ovals — the sheer mass of natural Seam Agate material in this stone represents exceptional geological quality. Stones of this size and weight with clean, polished surfaces and rich natural banding are rare and increasingly sought after by serious collectors.

The 6mm deep dome adds a spectacular visual dimension — at 29mm wide the dome creates a generous, rounded profile with light play across the polished surface that shifts and changes with every movement and every light source.

✦ Investment & Rarity:
Large natural cabochons of this quality — 20 carats, 29x20xmm, deep dome, fully polished — are genuinely rare. As natural gemstone rough of this quality becomes increasingly scarce, large premium cabochons like this one are recognised by serious collectors as both beautiful objects and sound natural gemstone investments.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones from Pedra Gems share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

Celebrated for its grounding and stabilising energy, Seam Agate is a favourite among crystal practitioners, artisan jewellers and serious collectors worldwide.

A once-in-a-collection natural gemstone from Pedra Gems — order today and receive this hand-selected showpiece, the largest and most impressive stone in our collection, fully polished, flat-backed, and ready to inspire something truly extraordinary.

Discover one of the rarest and most dramatic shapes in the Pedra Gems collection — our Natural Seam Agate Diamond Shape Cabochon, a striking 35x24x5mm gemstone weighing 27 carats, cut into a perfectly symmetrical diamond silhouette with warm orange-gold and red-brown banding punctuated by beautiful white and grey translucent areas.

The diamond shape — also known as the lozenge or rhombus cut — features four straight sides of equal length meeting at sharp points at the top and bottom, with the stone widest across its middle. It is a shape of perfect geometric symmetry — bold, architectural, and deeply striking. At 35x24mm this is a large, commanding diamond cabochon with exceptional visual presence.

✦ Stone Specifications:
• Shape: Diamond (Lozenge / Rhombus)
• Dimensions: 35 x 24 x 5 mm
• Weight: 27 Carats
• Stone Type: Natural Seam Agate
• Colour: Orange-gold, red-brown & white-grey natural banding
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.
• Shape & colour note: This is a one-of-a-kind stone — its diamond silhouette, colour combination and banding pattern are entirely unique and will never be replicated.

✦ About the Diamond Shape:
The diamond or lozenge cut is one of the most powerful geometric shapes available in cabochon form. Its perfect four-sided symmetry creates a strong, balanced composition — the sharp top point draws the eye upward while the sharp bottom point creates natural downward movement, making this shape exceptionally dynamic in pendant designs.

Unlike a square rotated 45°, the natural lozenge proportions of this stone at 35x24mm are elongated — taller than wide — giving it a graceful, vertically oriented diamond form that hangs with particular elegance as a drop pendant. The two pointed tips provide strong natural anchor points for wire wrapping at both top and bottom, creating perfectly symmetrical wrapping opportunities.

✦ The Colour Story:
This stone carries three distinct colour elements that work in beautiful harmony. The warm orange-gold tones glow with the richness of autumn leaves and desert sand. The deep red-brown areas add earthy, grounded depth. The white and grey translucent sections catch light differently to the opaque areas, creating a subtle inner glow effect that adds mystery and dimension to the stone's natural character.

✦ Perfect For:
• Bold statement drop pendant & necklace designs
• Wire wrapping — dual pointed tips provide symmetrical anchor points at top and bottom
• Art deco & geometric jewellery collections
• Gothic & alternative statement jewellery
• Modern architectural jewellery designs
• Crystal healing — root, sacral & crown chakra energies
• Collectors of rare geometric gemstone shapes
• Bespoke commission jewellery centrepiece

✦ Size Reference:
The US quarter dollar in the product photograph gives an accurate sense of scale. At 35x24mm this diamond cabochon is significantly larger than the coin — a bold, substantial stone with commanding presence on the neckline.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing richly layered banding in warm, earthy tones. No two stones from Pedra Gems share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

Celebrated for its grounding and stabilising energy, Seam Agate is beloved by crystal practitioners and artisan jewellers worldwide.

Order today from Pedra Gems and receive this exact hand-selected showpiece — fully polished, flat-backed, and ready to become the most geometrically striking centrepiece in your jewellery collection.

Presenting the crown jewel of the Pedra Gems collection — our Natural Seam Agate XL Oval Cabochon, a breathtaking 45x31x6mm gemstone weighing a full 69 carats. This is the largest, heaviest, and most magnificent stone we offer — a once-in-a-collection natural treasure of extraordinary scale and beauty.

At 45x31mm this oval is genuinely large — roughly the size of a large walnut and larger than most standard brooch blanks. The near 1.5:1 length-to-width ratio produces a beautifully balanced, full-bodied oval that displays the natural Seam Agate banding across a canvas of exceptional scale. Every layer, every band, every colour variation is visible in generous, sweeping detail that smaller stones simply cannot reveal.

The 6mm dome rises confidently above the surface, adding extraordinary visual depth and a rich, three-dimensional quality that makes the banding appear to glow from within. At 69 carats the stone carries a weight and substance in the hand that immediately communicates premium natural quality to any experienced collector or jeweller.

✦ Stone Specifications:
• Shape: Oval
• Dimensions: 45 x 31 x 6 mm
• Weight: 69 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, deep domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.

✦ Perfect For:
• Large statement brooch & pin centrepiece
• Bespoke commission jewellery — ring, cuff, pendant, collar
• Statement cuff bracelet focal stone
• Large wire wrapping & oversized bezel settings
• Electroforming & large copper wrap projects
• Display & museum-quality collector piece
• Crystal healing — the largest healing stone in the Pedra Gems range
• Interior design & decorative gemstone display
• Investment-grade natural gemstone collection

✦ Scale & Presence:
To appreciate the scale of this stone — at 45x31mm it is larger than a standard US quarter dollar (24mm) in both dimensions. In a brooch setting it would command the full focal point of any outfit. In a wire-wrapped pendant it would be a dramatic, statement piece that draws attention from across a room.

At 69 carats this is almost four times the weight of our standard 20ct ovals — the sheer mass of natural Seam Agate material in this stone represents exceptional geological quality. Stones of this size and weight with clean, polished surfaces and rich natural banding are rare and increasingly sought after by serious collectors.

The 6mm deep dome adds a spectacular visual dimension — at 45mm wide the dome creates a generous, rounded profile with light play across the polished surface that shifts and changes with every movement and every light source.

✦ Investment & Rarity:
Large natural cabochons of this quality — 69 carats, 45x31mm, deep dome, fully polished — are genuinely rare. As natural gemstone rough of this quality becomes increasingly scarce, large premium cabochons like this one are recognised by serious collectors as both beautiful objects and sound natural gemstone investments.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones from Pedra Gems share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

Celebrated for its grounding and stabilising energy, Seam Agate is a favourite among crystal practitioners, artisan jewellers and serious collectors worldwide.

A once-in-a-collection natural gemstone from Pedra Gems — order today and receive this hand-selected showpiece, the largest and most impressive stone in our collection, fully polished, flat-backed, and ready to inspire something truly extraordinary.

Discover big personality in a small package with our Natural Seam Agate Small Pear Shape Cabochon from Pedra Gems — a charming 17x11x6mm gemstone weighing just 8 carats, cut into a dainty teardrop silhouette with an exceptionally deep 6mm dome that gives this petite stone a visual richness and presence far beyond its compact size.

This is one of the most unique small stones in the Pedra Gems collection. While most small pear cabochons carry a low 4mm dome, this stone rises to a full 6mm — creating a rounded, deeply three-dimensional profile that catches light beautifully from every angle. The result is a small stone that feels bold, confident and richly natural in any jewellery setting.

✦ Stone Specifications:
• Shape: Pear (Teardrop)
• Dimensions: 17 x 11 x 6 mm
• Weight: 8 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, deep domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.

✦ Perfect For:
• Dainty drop pendant & charm necklace designs
• Dangle & drop earring settings — lightweight at 8ct
• Matching teardrop earring pairs
• Small pear ring settings
• Bridal & occasion jewellery making
• Boho & minimalist jewellery styles
• Wire wrapping — pointed tip provides natural anchor point
• Crystal healing & energy work

✦ Why This Small Pear Stands Out:
The 6mm dome is the defining feature of this stone — and it makes all the difference. A standard small pear at 17x11mm with a 4mm dome reads as flat and modest. This stone at 6mm dome reads as bold and richly three-dimensional, with a generous rounded profile that catches light beautifully from every angle and looks substantially more impressive than its dimensions alone would suggest.

At 17x11mm the stone has a near 1.55:1 length-to-width ratio — a classic, balanced teardrop proportion that reads clearly and beautifully as a pear even at this small scale. The rounded top curves confidently before tapering to an elegant pointed tip below — a classic teardrop form in miniature.

At just 8 carats this is lightweight enough for comfortable all-day earring wear — two of these stones together would make a beautifully matched pair of deep-dome teardrop earrings with a presence and richness that flat stones at the same size simply cannot match. The deep dome adds satisfying visual weight without adding physical weight.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones from Pedra Gems share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

Celebrated for its grounding and stabilising energy, Seam Agate is beloved by crystal practitioners and artisan jewellers worldwide. Its warm earthy tones complement sterling silver, gold-filled, and copper wire settings beautifully.

Order today from Pedra Gems and receive a hand-selected natural gemstone — fully polished, flat-backed, and ready to bring deep-dome elegance to your next dainty creation.

Ignite your jewellery designs with this extraordinary Natural Seam Agate Kite Shape Cabochon from Pedra Gems — a captivating 27x17x4mm gemstone weighing 13.5 carats, combining a rare symmetrical kite silhouette with vivid, fiery natural colouring in bold red, orange-gold and deep earthy brown.

This stone has two remarkable qualities working together — a rare and distinctive shape, and a colour palette of exceptional natural intensity. The vivid crimson red and rich orange-gold banding swirl across the face of the stone with the warmth of a desert fire, grounded by deep, earthy brown tones that give the piece balance and depth.

✦ Stone Specifications:
• Shape: Kite (Symmetrical five-sided — flat top, angled shoulders, sharp bottom point)
• Dimensions: 27 x 17 x 4 mm
• Weight: 13.5 Carats
• Stone Type: Natural Seam Agate
• Colour: Vivid red, orange-gold & dark brown natural banding
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.
• Shape & colour note: This is a one-of-a-kind stone — its kite silhouette, vivid colour combination and banding pattern are entirely unique and will never be replicated.

✦ About the Kite Shape:
The kite cut is a symmetrical five-sided silhouette — a flat straight top edge, two angled shoulder sides that widen outward before tapering inward to a sharp, decisive bottom point. Unlike the asymmetric shield cut, the kite is perfectly symmetrical — balanced left to right, creating a bold geometric form that is both architectural and dramatic.

The sharp lower point makes this shape exceptionally well  suited for drop pendants, where the point hangs below and draws the eye downward with natural authority. The flat top edge provides a clean, stable base for wire wrapping and bezel settings, making this one of the most practical geometric shapes to work with despite its dramatic appearance.

✦ Perfect For:
• Statement drop pendant & necklace designs
• Wire wrapping — flat top & pointed bottom provide perfect anchor points
• Geometric & architectural jewellery designs
• Gothic & alternative jewellery collections
• Art deco inspired statement pieces
• Boho & fire-inspired jewellery designs
• Root chakra & sacral chakra crystal healing
• Collectors of rare shapes & vivid natural colour

✦ The Colour Story:
The red and orange-gold tones of this stone are among the most vivid natural colours found in Seam Agate. Created by iron oxide and chalcedony minerals within the rock seams, these fiery hues have taken millions of years to form — each band a chapter in the stone's geological history.

The US quarter dollar in the product photograph gives an instant, accurate sense of scale — at 27x17mm this is a confident mid-size kite stone, substantial enough to make a bold statement as a drop pendant without being oversized.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing richly layered banding in warm, earthy tones. No two stones from Pedra Gems share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

In crystal healing traditions, the fiery red and orange tones are associated with the root and sacral chakras — bringing passion, creativity, grounding and vital energy. This is a stone that energises as much as it captivates.

Order today from Pedra Gems and receive this exact hand-selected showpiece — fully polished, flat-backed, and ready to ignite your next creation.

Make the boldest drop pendant statement in your collection with our Large Natural Seam Agate Pear Shape Cabochon from Pedra Gems — a dramatic 36x18x4mm gemstone weighing 21.5 carats, the longest pear cabochon in the Pedra Gems collection and one of the most striking teardrop stones we offer.

At 36mm long and 18mm wide this pear has a near perfect 2:1 length-to-width ratio — the classic elongated teardrop proportion that jewellers and designers have prized for centuries for its extraordinary ability to create visual length, movement and elegance in drop pendant designs. At this scale every millimetre of drop length is felt — this stone hangs beautifully and commands attention.

✦ Stone Specifications:
• Shape: Pear (Teardrop)
• Dimensions: 36 x 18 x 4 mm
• Weight: 21.5 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, low dome)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.

✦ Perfect For:
• Dramatic long drop pendant & statement necklace designs
• Oversized wire wrapping & large bezel settings
• Bold boho & artisan jewellery collections
• Electroforming & copper wrap projects
• Focal bead & showpiece centrepiece designs
• Crystal healing & energy work
• Collectors of large premium natural gemstones

✦ Why This XL Pear?
At 36mm this is the longest pear in the Pedra Gems collection — 2mm longer than our 34×18mm pear, and at 4mm dome it is also the sleekest of our large pears. That low dome profile means this stone sits closer to the skin than a high-dome pear, creating a more refined, elegant wearing experience despite the impressive size.

The 2:1 length-to-width ratio is widely regarded as the most dramatic and flattering elongated pear proportion. The wide 18mm rounded top tapers decisively over 36mm down to a fine, sharp point — creating a stone with exceptional visual movement and the longest possible pendant drop of any pear in the collection.

The pointed tip provides a strong natural anchor point for wire wrapping, while the long tapered body offers an exceptional canvas for detailed wire work along the full length of the stone. For bezel settings, the elongated form creates a sleek, architectural pendant that is both modern and timeless.

At 21.5 carats this is a substantial, premium quality stone — lighter than our 34×18mm pear by 2 carats due to the lower dome, but carrying the same bold presence and generous natural agate banding across the longest face area in the Pedra Gems pear range.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones from Pedra Gems share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

Celebrated for its grounding and stabilising energy, Seam Agate is beloved by crystal practitioners and artisan jewellers worldwide. Its warm earthy tones complement sterling silver, gold-filled, and copper wire settings beautifully.

Order today from Pedra Gems and receive this hand-selected large natural gemstone — fully polished, flat-backed, and ready to become the most dramatic drop pendant centrepiece in your collection.

Discover timeless teardrop elegance from Pedra Gems — our Natural Seam Agate Pear Shape Cabochon, a beautifully proportioned 24x16x5mm gemstone weighing 16 carats, cut into a classic balanced teardrop silhouette that sits in the sweet spot between slender and wide.

At 24x16mm this pear has a near 1.5:1 length-to-width ratio — one of the most universally flattering teardrop proportions in jewellery making. This golden ratio gives the stone a shape that is confidently a pear without being too elongated or too stubby — the rounded top curves generously before tapering smoothly into a strong, elegant point below. A teardrop that jewellers and buyers instinctively recognise as perfect.

✦ Stone Specifications:
• Shape: Pear (Teardrop)
• Dimensions: 24 x 16 x 5 mm
• Weight: 16 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.

✦ Perfect For:
• Classic drop pendant & necklace designs
• Wire wrapping & pear bezel settings
• Pear-shaped ring centrepiece
• Dangle & drop earring settings
• Bridal & occasion jewellery making
• Boho & artisan jewellery collections
• Crystal healing & energy work

✦ Why This Pear?
The 24x16mm proportions produce what many jewellers consider the most classic and versatile pear ratio — wide enough to display the natural Seam Agate banding generously across the face, long enough to hang beautifully as a drop pendant and create elegant downward movement on the neckline.

Compared to our slender pears (26×13mm, 27×12mm) this stone is noticeably wider — more substantial, more generous, more visually rich. Compared to our wider pears (23×18mm, 26×16mm) it is more distinctly teardrop in character — the shape reads clearly as a pear rather than a rounded oval.

The pointed tip provides a natural anchor point for wire wrapping, while the wide rounded top gives ample room for decorative wire work across the upper face. At 16 carats the stone has excellent weight for a pendant centrepiece — substantial enough to feel premium while remaining comfortable for daily wear.

The 5mm dome adds rich depth and beautiful light play across the polished natural agate surface — a warm, glowing presence that catches the eye naturally from every angle.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones from Pedra Gems share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

Celebrated for its grounding and stabilising energy, Seam Agate is beloved by crystal practitioners and artisan jewellers worldwide. Its warm earthy tones complement sterling silver, gold-filled, and copper wire settings beautifully.

Order today from Pedra Gems and receive a hand-selected natural gemstone — fully polished, flat-backed, and ready to become the elegant centrepiece of your next jewellery creation.

Experience the raw, organic beauty of nature on a grand scale with this Large Natural Seam Agate Tumble Shape Cabochon from Pedra Gems — a generous 30x18x5mm gemstone weighing 20 carats, shaped into a smooth, flowing tumble form that celebrates the natural character of the stone in its fullest expression.

This is our largest tumble cabochon — significantly bigger and more commanding than our compact 21x15mm tumble, offering a substantial organic canvas of natural Seam Agate banding across a generous 30x18mm face. The smooth, continuously flowing curves have no defined edges, no precise angles — just the pure, honest shape that nature and the cutter's hand have created together.

✦ Stone Specifications:
• Shape: Tumble (Organic Rounded)
• Dimensions: 30 x 18 x 5 mm
• Weight: 20 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.
• Shape note: Tumble shapes are unique by nature — the organic silhouette of this stone is individual to this piece and will not be replicated in any other.

✦ Perfect For:
• Large statement pendant & showpiece necklace designs
• Wire wrapping — smooth continuous curves wrap beautifully with no sharp edges or corners
• Oversized boho & nature-inspired jewellery designs
• Electroforming & large copper wrap projects
• Focal stone for macramé & fibre art
• Crystal healing & grounding energy work
• Display & collector pieces
• Bespoke commission jewellery centrepiece

✦ Why This Large Tumble?
Size matters here. At 30x18mm this tumble cabochon is nearly double the face area of our compact 21x15mm tumble — a genuinely large, statement-scale stone that commands attention as a pendant centrepiece. The generous organic form means the natural Seam Agate banding flows across a wide, open canvas, displaying its full character without constraint.

The tumble shape at this scale is particularly powerful for wire wrapping. The smooth, continuous curves allow wire to travel freely and naturally around the entire perimeter without a single sharp corner or angle to navigate — producing graceful, organic wrapping lines that complement the natural character of the stone perfectly. The larger the tumble, the more room for the wire artist to work — and at 30x18mm there is ample surface area for truly detailed, intricate wire designs.

At 20 carats this is a premium stone with genuine weight and substance — the kind of stone that feels immediately special in the hand. The 5mm dome adds excellent visual depth and warm light play across the polished surface, giving this large tumble a rich, glowing presence that smaller stones simply cannot replicate.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones from Pedra Gems share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

The tumble shape is the perfect vessel for Seam Agate's organic banding — both the shape and the pattern speak the same natural language of flowing curves and warm, grounded energy.

Celebrated for its grounding and stabilising energy, Seam Agate is a favourite among crystal practitioners and artisan jewellers worldwide.

Order today from Pedra Gems and receive this exact hand-selected large natural gemstone — smooth, polished, flat-backed, and ready to become a bold organic centrepiece of your next creation.

Discover generous natural beauty from Pedra Gems — our Natural Seam Agate Oval Cabochon, a beautifully rounded 25x18x5mm gemstone weighing 20 carats, cut into a wide, full-bodied oval silhouette that showcases the rich natural banding of Seam Agate across an exceptional face area.

At 25x18mm this oval has a near 1.4:1 length-to-width ratio — one of the widest and most rounded oval proportions in the Pedra Gems collection. This generous width creates a stone with maximum face area, displaying the natural banding of the Seam Agate in all its layered glory. Not an elongated oval, not a narrow stone — this is a full, confident, beautifully rounded gem.

✦ Stone Specifications:
• Shape: Oval
• Dimensions: 25 x 18 x 5 mm
• Weight: 20 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.

✦ Perfect For:
• Classic oval pendant & statement necklace designs
• Oval bezel ring settings — wide ovals make exceptional ring centrepieces
• Wire wrapping & bezel settings
• Bridal & occasion jewellery making
• Boho & artisan jewellery collections
• Everyday wearable statement pendant
• Crystal healing & grounding energy work

✦ Why This Wide Oval?
The 25x18mm proportions give this stone a wide, rounded form that sits between a classic oval and a near-circle in character — full, generous, and visually rich. That generous width means more natural agate banding is visible across the face of the stone than any of our narrower oval cuts.

For ring settings, a wider oval like this is particularly flattering — the broad face elongates and widens the appearance of the finger beautifully, creating a statement ring that draws attention from across a room. For pendant settings, the wide face creates a rich, substantial centrepiece that wears confidently on the neckline.

The 5mm dome adds excellent depth and warm light play across the polished surface — a classic dome height that gives this stone beautiful visual presence from every angle without being so high as to look bulky.

At 20 carats this is a premium stone with genuine substance. The weight combined with the wide face makes this one of the most satisfying and impressive natural cabochons in the Pedra Gems oval range — a stone that jewellers and collectors will immediately appreciate as exceptional quality.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones from Pedra Gems share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

Celebrated for its grounding and stabilising energy, Seam Agate is beloved by crystal practitioners and artisan jewellers worldwide. Its warm earthy tones complement sterling silver, gold-filled, and copper wire settings beautifully.

Order today from Pedra Gems and receive a hand-selected natural gemstone — fully polished, flat-backed, and ready to become the generous, beautiful centrepiece of your next jewellery creation.

Discover a heartfelt natural treasure from Pedra Gems — our Natural Seam Agate Heart Shape Cabochon, a beautifully proportioned 23x24x5mm gemstone weighing 20 carats, cut into a full, upright heart silhouette that radiates warmth, balance and natural beauty.

At 23x24mm this heart is almost perfectly square in its proportions — just 1mm taller than wide — producing one of the fullest, most satisfying heart silhouettes in our collection. The lobes are deep and rounded at the top, flowing down to a strong, decisive central point that gives the heart its most classic and universally recognised form.

✦ Stone Specifications:
• Shape: Heart
• Dimensions: 23 x 24 x 5 mm
• Weight: 20 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.

✦ Perfect For:
• Statement heart pendant & necklace designs
• Wire wrapping & heart bezel settings
• Statement heart ring centrepiece
• Valentine's Day & anniversary jewellery
• Crystal healing & heart chakra work
• Meaningful gift for gemstone lovers
• Bridal & romantic jewellery making
• Bespoke commission jewellery centrepiece

✦ Why This Heart?
The near-square 23x24mm proportions place this stone in the sweet spot of the Pedra Gems heart collection — larger and more substantial than our mid-size hearts (19×19mm, 20×19mm) yet more intimate and refined than our larger statement pieces (24×25mm, 26×29mm).

At 20 carats this is a confident, premium-weight stone. Heavy enough to feel truly special in the hand and meaningful as a gift, yet perfectly proportioned for comfortable everyday pendant wear. The 5mm dome adds excellent depth and rich natural light play across the polished surface.

The slightly taller-than-wide proportion — just 1mm of difference — gives this heart its beautifully upright, full character. The lobes curve generously at the top, the sides taper naturally inward, and the central point drops cleanly below — the heart silhouette at its most complete and satisfying.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones share the same pattern, colour, or flow — every cabochon from Pedra Gems is a completely unique piece of natural art.

In crystal healing traditions, the heart shape combined with Agate's grounding energy makes this a powerful stone for heart chakra work — promoting love, compassion, emotional balance and inner strength.

Order today from Pedra Gems and receive a hand-selected natural gemstone — fully polished, flat-backed, and ready to become the heartfelt centrepiece of your next beautiful creation.

Introducing one of the most visually dramatic stones in the Pedra Gems collection — our Natural Seam Agate Shield Cabochon, a breathtaking 38x16x4mm gemstone weighing 19.5 carats, combining a rare shield silhouette with an extraordinary explosion of vivid red, orange, yellow and brown natural banding.

This stone stops you in your tracks. The fiery interplay of deep crimson red, warm burnt orange, golden yellow and rich earthy brown — punctuated by mysterious silver-grey areas — creates a natural composition of rare intensity and beauty. No two stones in the world carry this exact combination of colour, pattern, and form.

✦ Stone Specifications:
• Shape: Shield (Kite Cut)
• Dimensions: 38 x 16 x 4 mm
• Weight: 19.5 Carats
• Stone Type: Natural Seam Agate
• Colour: Vivid red, orange, yellow, brown & silver-grey natural banding
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.
• Shape note: This is a one-of-a-kind stone — its shield silhouette, colour combination and banding pattern are entirely unique and will never be replicated.

✦ About the Shield Shape:
The shield cut — also known as the kite cut — is defined by two straight sides that meet at a sharp upper point, one gently curved side, and a sharp lower point. This asymmetric, angular silhouette is one of the rarest and most dramatic shapes in the cabochon world — bold, directional, and deeply distinctive.

At 38mm tall this is a long, elongated shield with a strong vertical presence. The sharp top point draws the eye upward while the curved lower section flows elegantly into the lower tip — creating a stone with genuine visual tension and movement.

✦ Perfect For:
• Show-stopping statement pendant & necklace designs
• Wire wrapping — the two pointed ends provide strong natural anchor points
• Freeform & artistic jewellery collections
• Boho & fire-inspired jewellery designs
• Electroforming & copper wrap projects
• Solar plexus & root chakra crystal healing
• Collectors of rare shapes & vivid natural colour
• Bespoke commission jewellery centrepiece

✦ The Colour Story:
The red tones in this stone are created by iron oxide inclusions within the agate — the same mineral that colours terracotta, rust, and desert sandstone. The golden yellow and burnt orange layers are rich in chalcedony and iron minerals, creating warm, glowing bands that seem to radiate heat. The silver-grey areas add a beautiful cooling contrast — like storm clouds moving across a desert sunset.

This is a stone that tells a geological story millions of years in the making.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing richly layered banding in warm, earthy tones. No two stones share the same pattern, colour, or flow.

In crystal healing traditions, the fiery red and orange tones of this stone are associated with the root and sacral chakras — bringing energy, passion, creativity, and grounding strength. The golden yellow tones connect to the solar plexus chakra, amplifying confidence and personal power.

A once-in-a-collection natural gemstone — order today and receive this exact hand-selected showpiece from Pedra Gems, fully polished, flat-backed, and ready to inspire a design as extraordinary as the stone itself.

Experience the beauty of nature's own geometry with our Natural Seam Agate Freeform Rounded Corner Triangle Cabochon — a captivating 30x14x5mm gemstone weighing 16.5 carats, shaped into an elongated triangular silhouette where every corner flows into a soft, organic curve rather than a sharp point.

This stone occupies a wonderful creative space between geometric and organic. Its three-sided triangular form gives it strong directional energy and visual structure — but the rounded corners soften every angle into a gentle, flowing curve that feels warm, natural, and deeply wearable. It is a triangle that has been touched by nature.

✦ Stone Specifications:
• Shape: Freeform (Rounded Corner Triangle)
• Dimensions: 30 x 14 x 5 mm
• Weight: 16.5 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.
• Shape note: Freeform stones are unique by nature — the exact curvature of the corners, banding pattern, and silhouette of this stone are individual to this piece and will not be replicated in any other.

✦ Perfect For:
• Long drop pendant & statement necklace designs
• Wire wrapping — rounded corners wrap smoothly with no sharp pressure points
• Boho & nature-inspired jewellery collections
• Electroforming & copper wrap projects
• Focal stone for macramé & fibre art
• Modern geometric jewellery with an organic twist
• Crystal healing & energy work
• Collectors of rare organic geometric shapes

✦ Why This Rounded Corner Triangle?
The 30×14mm proportions give this stone a dramatically elongated triangular form — nearly 2.2:1 length-to-width ratio — making it one of your most slender and directional triangle shapes. Wide across the top with a gently tapering base, it creates a strong sense of downward movement ideal for long drop pendants that draw the eye elegantly down the neckline.

The key distinction from your sharp-cornered triangles is the rounded corners. Where sharp corners create angular, geometric tension, rounded corners soften that energy — creating a shape that feels simultaneously structured and organic. This makes the stone more versatile across jewellery styles, equally at home in a boho wire-wrapped pendant and a modern minimalist setting.

The rounded corners are also a practical advantage for wire wrappers. Unlike sharp-cornered triangles that require tight corner wraps, the gentle curves allow wire to flow continuously and smoothly around the entire perimeter — producing naturally graceful, fluid wrapping lines with no awkward angles to navigate.

At 30mm long this is one of your longest triangle-family stones — a bold, dramatic drop pendant stone with serious visual presence. The 5mm dome adds excellent depth and rich light play, making the natural Seam Agate banding glow beautifully across the elongated face.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

The flowing organic banding of Seam Agate pairs beautifully with the softly rounded triangular form — both sharing the same language of gentle curves and natural movement.

Celebrated for its grounding and stabilising energy, Seam Agate is beloved by crystal practitioners and artisan jewellers worldwide.

Order today and receive this exact hand-selected gemstone — its rounded corners, elongated silhouette, and natural banding are entirely one of a kind and will never be repeated.

Discover delicate natural beauty in a small but perfectly formed package — our Natural Seam Agate Small Heart Cabochon, a charming 21x22x5mm gemstone weighing just 17 carats, cut into a sweet heart silhouette ideal for dainty, lightweight jewellery designs.

Do not let the small size fool you — at 21x22x5mm this petite heart cabochon is full of natural character. The rich banding of Seam Agate shows beautifully even at this compact scale, making it a wonderful choice for everyday jewellery pieces that are subtle yet meaningful.

✦ Stone Specifications:
• Shape: Heart
• Dimensions: 21x22x5mm
• Weight: 17 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.

✦ Perfect For:
• Dainty heart pendant & charm necklaces
• Heart stud & post earring designs
• Matching earring pairs — lightweight enough for all-day wear
• Small heart ring settings
• Valentine's Day & anniversary gifts
• Crystal healing & heart chakra work
• Children's & teen jewellery designs
• Charm bracelet & mixed media projects

✦ Why This Small Heart?
At just 21x22x5 mm and 17 carats, this is the most lightweight and wearable heart cabochon in our collection. Its petite size makes it especially well suited for earring pairs where matching stones and comfortable weight are both essential.

The slightly taller-than-wide proportions 21x22x mm tall x 5mm wide) give this heart a naturally upright, classic silhouette — full and recognisable even at small scale. The 4mm dome keeps the profile neat and refined, perfect for low-profile stud settings.

At this size and weight, two of these stones together would make a beautifully matched, lightweight pair of heart earrings — comfortable enough for everyday wear without sacrificing natural character.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

In crystal healing traditions, the heart shape combined with Agate's grounding energy makes this a popular choice for heart chakra work — promoting love, balance, and emotional warmth.

A sweet, meaningful gemstone — order today and receive a hand-selected natural stone, fully polished, flat-backed, and ready to bring heart-felt beauty to your next creation.

Discover elegant simplicity with our Natural Seam Agate Pear Shape Cabochon — a graceful 26x13x5mm gemstone weighing  carats, offering a generous elongated teardrop silhouette with an exceptionally low 5mm dome profile

This pear cabochon is distinctive in our collection for its slim, flat character. At just 3mm in height, it sits closer to the skin than any standard cabochon, making it a preferred choice for flush bezel settings, lightweight everyday pendants, resin casting, and any design where a low-profile stone is specifically required.

✦ Stone Specifications:
• Shape: Pear (Teardrop)
• Dimensions: 26x13x5 mm
• Weight: 13 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, low dome)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.

✦ Perfect For:
• Flush & low-profile bezel settings
• Lightweight everyday pendant designs
• Resin casting & resin art projects
• Macramé & fibre art focal stones
• Wire wrapping — low dome wire travels cleanly across the surface
• Flat lay jewellery photography props
• Boho & minimalist jewellery styles
• Crystal healing & energy work

✦ Why the Low 5mm Dome?
Most cabochons in this size range carry a 5–6mm dome — this stone at just 5mm is noticeably flatter and lighter. That difference matters for several reasons:

For bezel settings, a lower dome means the bezel walls do not need to be as tall, making setting easier and the finished piece sleeker. For wire wrapping, wire travels more smoothly and evenly across a flatter surface. For everyday wear pendants, less height means less snagging on clothing and a more comfortable wearing experience.

At 26x13x5mm the stone has a bold, elongated teardrop footprint — long enough to make a genuine statement as a pendant centrepiece — while the 5mm dome keeps the overall piece feeling refined and wearable rather than chunky.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

Celebrated for its grounding and stabilising energy, Seam Agate is beloved by crystal practitioners and artisan jewellers worldwide. Its warm tones complement sterling silver, gold-filled, and copper wire settings beautifully.

Order today and receive a hand-selected natural gemstone — fully polished, flat-backed, low-domed, and ready to inspire an elegant, wearable creation.

Discover timeless natural elegance with our Natural Seam Agate Oval Cabochon — a beautifully proportioned 29x20x6mm gemstone weighing 30.5 carats, combining classic oval form with a sleek low-profile dome that makes it one of the most versatile and wearable stones in our collection.

At 29x20x6 mm this oval has a near 1.6:1 length-to-width ratio — widely regarded among jewellers as one of the most flattering and universally appealing oval proportions available. Not too elongated, not too wide, this stone sits in the sweet spot that works beautifully in every setting style from classic fine jewellery to boho wire wrapping.

✦ Stone Specifications:
• Shape: Oval
• Dimensions: 29x20x6 mm
• Weight: 30.5 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, low dome)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.

✦ Perfect For:
• Classic oval pendant & necklace designs
• Oval bezel ring settings
• Wire wrapping & bezel settings
• Everyday wearable pendant designs
• Flush & low-profile bezel settings
• Bridal & occasion jewellery making
• Boho & minimalist jewellery styles
• Crystal healing & grounding energy work

✦ Why This Oval?
Two features make this stone stand out — its classic proportions and its low 4mm dome.

The 29x20mm proportions produce a near 1.6:1 ratio — the golden ratio of oval cabochons. This proportion is the most universally flattering for oval stones because it creates a shape that reads clearly as an oval without looking elongated or stubby. It suits standard oval bezel settings, ring mounts, and pendant blanks that buyers already have in their collection.

The 4mm dome is lower than most cabochons of this size, which carries three practical advantages. For everyday pendant wear, a lower dome sits closer to the skin and catches on clothing less. For bezel settings, lower dome walls are needed making setting easier and the finished piece sleeker. For wire wrapping, wire travels more smoothly and evenly across a flatter surface producing cleaner wrapping lines.

At 30.5 carats this is a well-weighted stone — substantial enough to feel premium as a pendant centrepiece while remaining perfectly comfortable for daily wear. A reliable, beautiful, endlessly versatile natural gemstone.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing its characteristic richly layered banding in warm, earthy tones. No two stones share the same pattern, colour, or flow — every cabochon is a completely unique piece of natural art.

Celebrated for its grounding and stabilising energy, Seam Agate is beloved by crystal practitioners and artisan jewellers worldwide. Its warm earthy tones complement sterling silver, gold-filled, and copper wire settings beautifully.

Order today and receive a hand-selected natural gemstone — fully polished, flat-backed, and ready to become the elegant centrepiece of your next jewellery creation.