seam agate

Natural Seam Agate – Soft Triangle Shape | 19x13x5mm | Approx. 10 Carats

Add a naturally elegant triangle-cut gemstone to your collection. This Seam Agate features a soft, non‑90° triangle shape – ideal for organic jewelry designs, crystal grids, or unique displays. Each piece highlights natural agate banding and earthy tones.

📏 Dimensions & Tolerance:

• Length: 19mm (±0.5mm)

• Width: 13mm (±0.5mm)

• Thickness: 5mm (±0.5mm)

• Carat Weight: 10 carats approx. (±0.5 carat)

Due to handcrafted cutting, minor variations of ±0.5mm and ±0.5ct are normal and add to each stone’s unique character.

✨ Stone Type: Natural Seam Agate

🔍 Shape: Triangle (not a 90° right angle – softer, more natural triangular form)

💎 Uses:

• Pendants and necklaces

• Earring pairs

• Gemstone collection

• Crystal healing layouts

• Wire wrapping and bezel settings

⚠️ Note: Natural color and banding patterns vary. You will receive the exact stone shown.

Natural Seam Agate – Perfect 90° Triangle Shape | 21x12x4mm | 8 Carats

Add a truly unique geometric gemstone to your collection with this natural Seam Agate. Cut into a precise 90° right-angle triangle, this piece offers a perfect balance of natural earth tones and clean, modern lines. Ideal for jewelry designers, collectors, or lapidary artists looking for something distinctive.

📏 Dimensions:

• Length: 21mm

• Width: 12mm

• Thickness: 4mm

• Carat Weight: 8 carats approx.

• Shape: Right-angle triangle (90°)

✨ Stone Type: Natural Seam Agate

🔍 Features:

• Clean, sharp 90° triangular cut

• Natural banding and earthy agate patterns

• Polished surface with natural texture

• Great for wire wrapping, bezel setting, or display

• One-of-a-kind formation – no two are identical

💎 Uses:

• Pendant making

• Statement earrings

• Crystal healing grids

• Gemstone collection display

• Custom jewelry design

📦 Shipping: Carefully packed and shipped within 24-48 hours.

⚠️ Note: Due to natural stone variations, color and pattern may differ slightly from photos. You will receive the exact gemstone shown.

Discover one of nature's rarest gifts — our Natural Seam Agate Oval Cabochon, a captivating 29x17x3mm gemstone weighing 14.5 carats, combining two exceptional features in a single stone: a rare partial translucency that allows light to glow through, and an elegant low 3mm dome profile that makes it one of the most versatile and wearable stones in our collection.

Hold this stone to the light and watch it transform — the translucent section glows warmly, creating a living interplay of light and shadow across the natural agate banding. This is not a common feature. Most Seam Agate cabochons are fully opaque — this stone carries a naturally translucent area where silica-rich layers thin and clear, producing a soft inner glow that changes with the light throughout the day.

✦ Stone Specifications:
• Shape: Oval
• Dimensions: 29 x 17 x 3 mm
• Weight: 14.5 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, low dome)
• Finish: High-polish, smooth surface
• Special Feature: Partially translucent — natural light passes through
• 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.
• Translucency note: The glowing translucent area is a natural characteristic unique to this individual stone and will not be replicated in any other piece.

✦ Perfect For:
• Backlit pendant & statement necklace designs
• Wire wrapping — translucent area glows beautifully when worn
• Flush & low-profile bezel settings
• Resin casting & resin art projects — stone glows within resin under light
• Lightweight everyday pendant designs
• Macramé & fibre art focal stones
• Crystal healing & light energy work
• Collectors of rare & unusual natural gemstones

✦ Two Rare Features in One Stone:
This cabochon is exceptional for two independent reasons — and the combination of both in a single stone makes it truly one of a kind.

The partial translucency creates a glowing window effect when backlit — a feature highly prized by collectors and jewellery designers who want a stone with depth, mystery, and living light play that no fully opaque stone can offer.

The 3mm low dome means this stone sits closer to the skin than any standard cabochon, making it ideal for flush bezel settings where a lower profile is required. For wire wrapping, the flat surface means wire travels cleanly and evenly. For resin casting, the low height means the stone can be fully embedded in a shallow resin layer while still showing its full face.

At 29x17mm this is a generous oval footprint — large enough to be a bold centrepiece pendant — while the 3mm dome keeps the overall piece feeling refined and lightweight rather than chunky.

✦ Photography Tip:
Make sure to photograph this stone held up to a window or lamp so buyers can see the translucent glow. This backlit photo will be your most powerful listing image and your biggest conversion driver.

✦ 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 translucency — every cabochon is a completely unique piece of natural art.

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

Order today and receive this exact hand-selected gemstone — its translucency, banding, and low-dome character are entirely one of a kind and will never be repeated.

Discover a truly rare and organic gemstone form with our Natural Seam Agate Free Form Rounded Triangle Cabochon — a striking 36x16x4mm stone weighing 20 carats, shaped into a softly triangular silhouette where every edge and corner is naturally rounded and smooth rather than sharp or angular.

This is not a precision geometric triangle. It is a free form cabochon that nature and the cutter's hand have shaped into a gentle, organic triangle-like form — wide at one end, tapering toward the other, with all edges flowing in soft curves rather than hard angles. The result is a stone that feels simultaneously architectural and natural — grounded and earthy, yet boldly shaped.

✦ Stone Specifications:
• Shape: Free Form (Rounded Triangle — organic soft-edged silhouette)
• Dimensions: 36 x 16 x 4 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: Free form stones are unique by nature — the rounded triangular silhouette, edge curvature, and banding pattern of this stone are individual to this piece and will not be replicated in any other.

✦ Perfect For:
• Statement pendant & long drop necklace designs
• Wire wrapping — soft rounded edges wrap beautifully and comfortably
• Boho & nature-inspired jewellery collections
• Electroforming & copper wrap projects
• Focal stone for macramé & fibre art
• Crystal healing & energy work
• Collectors of rare & unusual organic gemstone shapes

✦ Why Rounded Triangle?
The rounded triangle is one of the most visually compelling shapes in the freeform cabochon world. Sharp-cornered triangles can look harsh and geometric — but when all edges are softly rounded, the stone takes on a warm, organic character that is both distinctive and deeply wearable.

At 36mm long and just 16mm wide, this is a dramatically elongated stone — one of the longest in our collection. Its slender footprint makes it ideal for long drop pendants that create vertical movement on the neckline. The low 4mm dome keeps the overall piece sleek and elegant despite the generous length.

The soft rounded edges are also a practical advantage for wire wrapping — smooth curves allow wire to travel cleanly along the perimeter without catching or creating uncomfortable pressure points against the skin.

✦ 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 character — and with a free form cut, not even the shape is ever repeated.

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

Order today and receive this exact hand-selected gemstone — its rounded triangular form, banding, and character are entirely one of a kind and will never be repeated.

Bring timeless elegance to your jewellery designs with our Natural Seam Agate Marquise Cabochon — a beautifully elongated 26x11x5mm gemstone weighing 14.5 carats, cut into the distinctive marquise silhouette beloved by fine jewellery makers and artisan designers alike.

The marquise shape — also known as the navette or "little boat" cut — features an elongated elliptical body tapering to a sharp point at both ends. This iconic double-pointed silhouette is one of the most refined and dramatic shapes in gemstone jewellery, prized for its ability to elongate the finger, lengthen the neckline, and add a sense of movement and grace to any setting.

✦ Stone Specifications:
• Shape: Marquise (Navette)
• Dimensions: 26 x 11 x 5 mm
• Weight: 14.5 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.

✦ Perfect For:
• Statement pendant & drop necklace designs
• Marquise ring centrepiece settings
• Wire wrapping — both pointed ends provide natural anchor points
• Art deco & vintage-inspired jewellery
• Elongated bezel & navette setting designs
• Crystal healing & energy work
• Collectors of elegant gemstone shapes

✦ Why Marquise Shape?
The marquise is one of the most flattering shapes in all of jewellery making. Its 26x11mm proportions produce a length-to-width ratio of nearly 2.4:1 — a dramatic, elongated form that creates a strong visual line in any design.

When set as a ring stone, the marquise shape visually elongates the finger — a well-known effect that has made it a perennial favourite in engagement and statement ring design. As a pendant, the double-pointed form creates natural movement and a dynamic, directional energy that oval and round stones simply cannot match.

The two pointed tips are a practical advantage for wire wrappers — each tip provides a natural anchor point for wrapping, creating a symmetrical, balanced design with structural integrity at both ends.

At 14.5 carats and 5mm dome, this is a substantial and visually commanding stone — full of rich natural Seam Agate banding across its generous surface area.

✦ 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 pair beautifully with sterling silver, gold-filled, and copper wire settings.

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

Add sweet natural charm to your jewellery collection with our Natural Seam Agate Small Heart Cabochon — a delightful 15x16x4mm gemstone weighing 6.5 carats, cut into a classic upright heart silhouette perfectly suited for dainty, lightweight jewellery designs. 

At 15x16mm, this petite heart is slightly taller than it is wide, producing a naturally upright and classically proportioned heart shape that reads clearly and beautifully even at this compact scale. The rich natural banding of Seam Agate adds character and individuality that mass-produced heart stones simply cannot offer.

✦ Stone Specifications:                                                                                                         • Shape: Heart                                                                                                                         • Dimensions: 15 x 16 x 4 mm                                                                                                 • Weight: 6.5 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. 

✦ Perfect For:                                                                                                                           • Dainty heart pendant & charm necklaces                                                                             • Heart stud & drop earring designs                                                                                         • Matching lightweight earring pairs                                                                                         • Small heart ring settings                                                                                                         • Valentine's Day & anniversary gifts                                                                                         • Crystal healing & heart chakra work                                                                                       • Children's & teen jewellery designs                                                                                     • Charm bracelet & stacking jewellery

✦ Why This Size?                                                                                                                 At 15x16mm and just 6.5 carats, this is one of the lightest heart cabochons in our collection — making it an excellent choice wherever comfort and wearability matter most. Two of these stones together would make a beautifully matched pair of heart earrings comfortable enough for all-day wear.

The 4mm dome strikes a lovely balance — enough height to give the stone visual presence and natural depth, yet low enough to sit neatly in stud or bezel earring settings without protruding uncomfortably. The slightly taller-than-wide proportion gives this heart a refined, upright silhouette that is instantly recognisable and full of natural charm.

✦ 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 charming natural gemstone — order today and receive a hand-selected stone, fully polished, flat-backed, and ready to bring heartfelt beauty to your next creation.

Discover elegant simplicity with our Natural Seam Agate Pear Shape Cabochon — a graceful 30x17x3mm gemstone weighing 14 carats, offering a generous elongated teardrop silhouette with an exceptionally low 3mm 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: 30 x 17 x 3 mm
• Weight: 14 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 3mm Dome?
Most cabochons in this size range carry a 5–6mm dome — this stone at just 3mm 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 30x17mm the stone has a bold, elongated teardrop footprint — long enough to make a genuine statement as a pendant centrepiece — while the 3mm 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.

Natural Seam Agate cabochon in a pear shape, measuring 35x17x6 mm and weighing 27.5 carats. This polished gemstone features beautiful natural banding and earthy scenic patterns, making it ideal for pendants, rings, wire wrapping, and custom handmade jewelry.

You will receive the exact gemstone shown in the photos. Each Seam Agate cabochon is unique, with natural variations in color and pattern that make every piece one of a kind.

Stone Details:

• Stone: Seam Agate
• Shape: Pear
• Size: 35 x 17 x 6 mm
• Weight: 27.5 Carats
• Finish: Polished Cabochon
• Color: Natural earthy brown, tan, cream, and scenic pattern tones
• Quantity: 1 Piece
• Treatment: Natural

Seam Agate is prized for its striking natural layers and landscape-like patterns. This pear-shaped cabochon is especially suitable for elegant pendant designs and artisan jewelry pieces.

Perfect for:

• Pendant making
• Ring making
• Wire wrapping
• Handmade jewelry
• Artisan jewelry design
• Gemstone collections

Please note: Natural gemstones may contain slight inclusions and variations that enhance their natural beauty.

Natural Seam Agate cabochon in an oval shape, measuring 36x24x5 mm and weighing 35 carats. This polished gemstone displays beautiful natural banding and earthy tones, making it an excellent choice for handmade jewelry, statement pendants, rings, wire wrapping, and gemstone collections.

You will receive the exact gemstone shown in the photos. Each Seam Agate cabochon has its own unique natural pattern and color combination.

Stone Details:

• Stone: Seam Agate
• Shape: Oval
• Size: 36 x 24 x 5 mm
• Weight: 35 Carats
• Finish: Polished Cabochon
• Color: Natural earthy brown, cream, tan, and scenic pattern tones
• Quantity: 1 Piece
• Treatment: Natural

Seam Agate is valued for its attractive natural patterns and distinctive appearance. This larger oval cabochon is ideal for creating one-of-a-kind statement jewelry pieces.

Perfect for:

• Statement pendants
• Ring making
• Wire wrapping
• Custom jewelry design
• Artisan jewelry
• Gemstone collections

Please note that natural gemstones may contain minor inclusions and pattern variations that enhance their individuality.

Step beyond the ordinary with our Natural Seam Agate Triangle Shape Cabochon — a distinctive 19x12x5mm gemstone weighing 7 carats, cut into a unique Triangle silhouette that cannot be categorised as any standard shape and cannot be replicated in any other stone.

In the gemstone world, "Triangle shape" refers to any custom or non-standard cut that falls outside classic shapes like oval, round, or pear. This stone carries its own individual outline — shaped by the cutter's eye and the natural character of the rough agate — resulting in a piece that is as personal and distinctive as the jewellery made from it.

✦ Stone Specifications:
• Shape: Triangle 
• Dimensions: 19 x 12 x 5 mm
• Weight: 7 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: Triangle shapes are unique by definition — the silhouette of this stone is individual to this piece and will not be identical to any other.

✦ Perfect For:
• One-of-a-kind pendant & necklace designs
• Creative wire wrapping & freeform settings
• Boho & artisan jewellery collections
• Electroforming & copper wrap projects
• Statement ring or brooch centrepiece
• Crystal healing & energy work
• Collectors of rare & unusual gemstone cuts

✦ Why Triangle Shape?
Triangle cut cabochons are the most creatively liberating stones a jeweller can work with. Because the shape is non-standard, it cannot be replicated — every finished piece of jewellery made from it becomes inherently unique. There are no matching bezels, no identical settings — just the freedom to design something entirely original around this one particular stone.

At 19x12mm the stone is a versatile mid-size — substantial enough to be a confident pendant centrepiece while compact enough for a ring or brooch setting. The 5mm dome adds excellent visual depth and a rich polished presence.

✦ 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 — and with a Triangle cut, not even the shape is ever repeated.

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

Order today and receive this exact hand-selected gemstone — its shape, banding, and character are entirely one of a kind and will never be repeated.

Make a bold impression with our Large Natural Seam Agate Pear Shape Cabochon — a stunning 34x18x5mm gemstone weighing 23.5 carats, cut into a dramatic elongated teardrop silhouette that commands attention in any jewellery design.

This is one of our largest pear cabochons, offering an exceptional canvas of natural Seam Agate banding across a generous 34mm length. The classic teardrop form — rounded at the top and tapering to a graceful point — creates natural visual movement and an elegance that few other shapes can match at this scale.

✦ Stone Specifications:
• Shape: Pear (Teardrop)
• Dimensions: 34 x 18 x 5 mm
• Weight: 23.5 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.

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

✦ Why This Large Pear?
At 34x18mm this is a genuinely large pear cabochon with a confident presence. The 34mm length is approximately the width of a standard coin — giving this stone serious visual impact as a pendant centrepiece that will be noticed from across a room.

The length-to-width ratio of nearly 2:1 produces the classic elongated teardrop proportion that is most flattering when worn as a drop pendant — drawing the eye downward and elongating the neckline beautifully.

The pointed tip provides a strong natural anchor point for wire wrapping techniques, while the wide rounded top gives ample surface area to showcase the stone's unique natural banding. The 5mm dome adds excellent depth and rich light play across the polished surface.

At 23.5 carats, this stone has real weight and substance — a quality that experienced jewellers and collectors immediately recognise as a mark of a premium 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 alike. Its warm earthy tones pair beautifully with sterling silver, gold-filled, and copper wire settings.

Order today and receive this hand-selected large natural gemstone — fully polished, flat-backed, and ready to become the dramatic centrepiece of your next statement creation.

Discover delicate natural beauty in a small but perfectly formed package — our Natural Seam Agate Small Heart Cabochon, a charming 13x14x4mm gemstone weighing just 6 carats, cut into a sweet heart silhouette ideal for dainty, lightweight jewellery designs.

Do not let the small size fool you — at 13x14mm 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: 13 x 13 x 4 mm
• Weight: 6 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 13x14mm and 6 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 (14mm tall x 13mm 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.

Experience timeless natural beauty with our Natural Seam Agate Round Cabochon — a perfectly circular 20mm gemstone weighing 18.5 carats, offering the most universally versatile shape in jewellery making combined with the rich, earthy character of genuine Seam Agate.

At exactly 20x20mm, this is a true round cabochon — equal in width and height — making it a perfect fit for standard 20mm round bezel settings, ring mounts, and pendant blanks straight from the box. No custom fitting, no guesswork — just a beautifully natural stone ready to set.

✦ Stone Specifications:
• Shape: Round (Circle)
• Dimensions: 20 x 20 x 5 mm (20mm diameter)
• Weight: 18.5 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.

✦ Perfect For:
• Round bezel pendant & necklace settings
• 20mm ring bezel settings
• Wire wrapping & round frame settings
• Stud & statement earring designs
• Brooch & pin centrepiece
• Crystal healing & all-purpose energy work
• Beginners & experienced jewellery makers alike

✦ Why Round Shape?
The round cabochon is the most classic and widely used shape in gemstone jewellery — and for good reason. Its perfect symmetry means it works in any orientation, fits the widest range of standard settings available, and suits every jewellery style from minimalist to bohemian to fine jewellery.

At 20mm diameter, this stone is a confident, substantial size — large enough to command attention as a pendant centrepiece or statement ring stone, yet proportionate enough for everyday wear. The 5mm dome gives it excellent visual depth and a satisfying, tactile quality.

At 18.5 carats, this round cabochon carries impressive weight for its size — a testament to the density and quality of the natural Seam Agate material.

✦ Beginner Friendly:
Round cabochons are the easiest shape to work with for new jewellery makers — standard round bezels are the most widely available and affordable setting type, making this stone an excellent choice for those just starting out in wire wrapping or bezel setting.

✦ 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 — 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 and artisan jewellers worldwide. Its warm tones complement silver, gold, and copper settings equally well.

Order today and receive a hand-selected natural gemstone — perfectly round, fully polished, flat-backed, and ready to set into your next creation.

Celebrate the beauty of natural gemstones with our Natural Seam Agate Heart Shape Cabochon — a beautifully balanced 20x19x5mm stone weighing 14 carats, cut into a classic, full heart silhouette that is as timeless as it is striking.

At 20x19mm, this heart cabochon is almost perfectly proportioned in width and height, producing a full, rounded heart shape with exceptional visual balance. Neither too wide nor too tall, it is the kind of heart cut that jewellery makers return to again and again for its versatility and universal appeal.

✦ Stone Specifications:
• Shape: Heart
• Dimensions: 20 x 19 x 5 mm
• Weight: 14 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 heart pendant & necklace designs
• Valentine's Day & anniversary jewellery
• Wire wrapping & heart bezel settings
• Statement heart ring centrepiece
• Crystal healing & heart chakra work
• Meaningful gifts for gemstone lovers
• Bridal & romantic jewellery making

✦ Why This Heart Shape?
The near-equal 20x19mm proportions of this cabochon produce one of the most classically balanced heart shapes available. Many heart stones are either too wide and flat or too tall and narrow — this stone hits the ideal proportions that give a heart its most recognisable, satisfying silhouette.

The 5mm dome adds generous depth and excellent light play across the polished surface, giving the stone a rich, full presence whether set in a pendant or ring. At 14 carats it carries real weight and visual substance without being oversized.

✦ 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 stability.

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

Bring bold geometric character to your jewellery designs with our Natural Seam Agate Trapezoid Cabochon — a striking 21x13x4mm gemstone weighing 10.5 carats, cut into the distinctive trapezoid silhouette loved by contemporary and art deco jewellery makers.

The trapezoid shape — also known as the trapeze cut — features four sides with two parallel edges of different lengths, creating an asymmetric angular form that is both architectural and dynamic. When paired with the organic flowing bands of natural Seam Agate, the result is a stone that beautifully bridges natural and geometric worlds.

✦ Stone Specifications:
• Shape: Trapezoid (Trapeze Cut)
• Dimensions: 21 x 13 x 4 mm
• Weight: 10.5 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.

✦ Perfect For:
• Modern & contemporary pendant designs
• Art deco & geometric jewellery styles
• Wire wrapping & angular bezel settings
• Statement ring centrepiece
• Minimalist & architectural jewellery
• Crystal healing & grounding work
• Collectors of unusual gemstone cuts

✦ Why Trapezoid Shape?
The trapezoid is one of the most sought-after geometric cuts among modern jewellery designers. Its angular lines create visual interest and a sense of intentional design that round and oval stones simply cannot offer. The wider top edge draws the eye while the narrower base creates natural downward movement — ideal for pendant settings.

At 21x13mm, this stone is a confident, mid-size piece — large enough to make a clear visual statement without overpowering a design. The 4mm dome keeps the profile sleek and contemporary, making it equally suited for ring and pendant settings.

✦ 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 character — 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 and artisan jewellers worldwide. Its earthy tones complement both silver and gold settings beautifully.

Order today and receive a hand-selected natural gemstone — polished, flat-backed, and ready to anchor your next geometric jewellery creation.