Cabochon

Discover a truly rare natural treasure — our Natural Seam Agate Free Form Cabochon, a captivating 28x14x5mm gemstone weighing 15 carats, featuring a remarkable partial translucency on one side that allows light to pass through like a glowing window.

This is not a common feature. Most Seam Agate cabochons are fully opaque — but this individual stone carries a naturally translucent section on one side where the agate thins and clears, creating a beautiful interplay of light and shadow across the stone's surface. Hold it to the light and watch it glow.

✦ Stone Specifications:
• Shape: Free Form (naturally contoured organic silhouette)
• Dimensions: 28 x 14 x 5 mm
• Weight: 15 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Special Feature: Partially translucent on one side — 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.
• Shape note: Free form stones are unique by nature — the silhouette, banding pattern, and translucent area of this stone are individual characteristics that will not be replicated in any other piece.

✦ Perfect For:
• Wire wrapping — the translucent area glows beautifully when light hits the wrapped pendant
• Backlit pendant & statement necklace designs
• Electroforming & copper wrap projects
• Boho, artisan & nature-inspired jewellery
• Crystal healing & light energy work
• Collectors of rare & unusual natural gemstones

✦ The Translucency Feature:
Partial translucency in Seam Agate occurs naturally where silica-rich layers within the stone are thinner or purer in composition. This creates a softly glowing section that contrasts with the opaque banded areas — a characteristic highly prized by collectors and jewellery designers who want a stone with depth, mystery, and light play that no fully opaque stone can offer.

When set in a wire-wrapped pendant and worn, light from the environment naturally backlights the translucent section throughout the day — creating a living, ever-changing glow.

✦ 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, shape, and banding are one of a kind and will never be repeated.

Experience the rare magic of a glowing natural gemstone with our Natural Seam Agate Oval Cabochon — a captivating 22x13x5mm stone weighing 13.5 carats, featuring a beautiful partial translucency that allows natural light to pass through and glow warmly from within.

Hold this stone to the light and watch it come alive. The translucent section glows with a soft, warm inner light — a completely natural phenomenon that occurs where silica-rich layers within the agate thin and clear, creating a living interplay of light and shadow across the stone's surface. This is not a common feature in Seam Agate and makes this stone truly one of a kind.

✦ Stone Specifications:
• Shape: Oval
• Dimensions: 22 x 13 x 5 mm
• Weight: 13.5 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, domed top)
• 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:
• Wire wrapping — translucent area glows beautifully when pendant is worn
• Backlit & statement pendant necklace designs
• Standard oval bezel & pendant settings
• Resin casting — stone glows within resin under light
• Crystal healing & light energy work
• Boho & artisan jewellery collections
• Collectors of rare & unusual natural gemstones

✦ What Makes This Stone Special:
Partial translucency in Seam Agate occurs naturally where silica-rich layers within the stone are thinner or purer in composition. This creates a softly glowing section that contrasts beautifully with the opaque banded areas — a quality highly prized by collectors and jewellery designers who want a stone with depth, mystery, and living light play.

At 22x13mm this is a versatile mid-size oval — slender enough to sit elegantly on the neckline yet large enough to showcase the translucent glow with impact. The standard 5mm dome gives the stone excellent depth and rich light play across the polished surface, enhancing the glowing translucent effect beautifully.

When set in a wire-wrapped pendant and worn, natural light from the environment backlights the translucent section throughout the day — creating a living, ever-changing glow that no opaque stone can replicate.

✦ Photography Tip:
Photograph this stone held up to a bright window or lamp so light shines through the translucent section. This backlit glow shot will be your most powerful listing image — it instantly communicates what makes this stone rare and will stop buyers mid-scroll. Add "See photo 2 for the glowing effect" in your first description line.

✦ 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 character are entirely one of a kind and will never be repeated.

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.

Presenting our most impressive heart cabochon — the Natural Seam Agate XL Heart Cabochon, a breathtaking 23x26x4 mm gemstone weighing a full 20.5 carats. This is the largest, heaviest, and most dramatic heart stone in our entire collection, and it shows.

At 23mm tall and 26mm wide, this is a genuinely large heart — taller than it is wide, producing an upright, elongated heart silhouette with a strong, expressive curvature at the top and a deep, confident point below. The 4mm dome rises generously above the surface, creating a stone with exceptional visual depth, rich light play, and a commanding tactile presence that must be held to be fully appreciated.

At 20.5carats, this is a premium natural gemstone of substantial weight and quality — a stone that collectors and experienced jewellers will immediately recognise as something special.

✦ Stone Specifications:
• Shape: Heart
• Dimensions:  23x26x4mm
• Weight: 20.5 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:
• XL statement pendant & showpiece necklace designs
• Oversized wire wrapping & large bezel settings
• Luxury collector's piece & display stone
• Bold Valentine's Day & anniversary gifts
• Crystal healing & heart chakra work — deep connection stone
• Bespoke commission jewellery centrepiece
• Gemstone collectors & natural stone enthusiasts

✦ Why This Stone Is Exceptional:
At 20.5 carats and 23x26xmm, this heart cabochon is in a class of its own. To put the size in perspective — at 26mm tall this stone is roughly the size of a large coin, making it a bold, unmissable centrepiece in any jewellery design or display collection.

The taller-than-wide proportions give this heart a deep, upright silhouette — an elongated heart form with strong curves at the lobes and a decisive downward point. This silhouette is particularly dramatic when worn as a large drop pendant, the point hanging below and the full face of the stone displaying its natural banding in all its glory.

The 6mm dome — matching our other deep-dome hearts — rises richly above the surface, adding extraordinary visual depth and a three-dimensional quality rarely seen in agate cabochons of this size. Light plays across the polished dome from every angle.

20.5 carats in natural Seam Agate is a substantial weight. This is a stone made for someone who appreciates quality, scale, and the raw, unrepeatable beauty of natural gemstones.

✦ 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 powerful stone for heart chakra work — amplified here by the exceptional size and weight, which many practitioners believe deepens the energetic connection.

A once-in-a-collection natural gemstone — order today and receive this hand-selected showpiece, fully polished, flat-backed, and ready to become the most unforgettable centrepiece you have ever created.

Presenting our most impressive heart cabochon — the Natural Seam Agate XL Heart Cabochon, a breathtaking 26x29x6mm gemstone weighing a full 35 carats. This is the largest, heaviest, and most dramatic heart stone in our entire collection, and it shows.

At 29mm tall and 26mm wide, this is a genuinely large heart — taller than it is wide, producing an upright, elongated heart silhouette with a strong, expressive curvature at the top and a deep, confident point below. The 6mm dome rises generously above the surface, creating a stone with exceptional visual depth, rich light play, and a commanding tactile presence that must be held to be fully appreciated.

At 35 carats, this is a premium natural gemstone of substantial weight and quality — a stone that collectors and experienced jewellers will immediately recognise as something special.

✦ Stone Specifications:
• Shape: Heart
• Dimensions: 26 x 29 x 6 mm
• Weight: 35 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:
• XL statement pendant & showpiece necklace designs
• Oversized wire wrapping & large bezel settings
• Luxury collector's piece & display stone
• Bold Valentine's Day & anniversary gifts
• Crystal healing & heart chakra work — deep connection stone
• Bespoke commission jewellery centrepiece
• Gemstone collectors & natural stone enthusiasts

✦ Why This Stone Is Exceptional:
At 35 carats and 26x29mm, this heart cabochon is in a class of its own. To put the size in perspective — at 29mm tall this stone is roughly the size of a large coin, making it a bold, unmissable centrepiece in any jewellery design or display collection.

The taller-than-wide proportions give this heart a deep, upright silhouette — an elongated heart form with strong curves at the lobes and a decisive downward point. This silhouette is particularly dramatic when worn as a large drop pendant, the point hanging below and the full face of the stone displaying its natural banding in all its glory.

The 6mm dome — matching our other deep-dome hearts — rises richly above the surface, adding extraordinary visual depth and a three-dimensional quality rarely seen in agate cabochons of this size. Light plays across the polished dome from every angle.

35 carats in natural Seam Agate is a substantial weight. This is a stone made for someone who appreciates quality, scale, and the raw, unrepeatable beauty of natural gemstones.

✦ 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 powerful stone for heart chakra work — amplified here by the exceptional size and weight, which many practitioners believe deepens the energetic connection.

A once-in-a-collection natural gemstone — order today and receive this hand-selected showpiece, fully polished, flat-backed, and ready to become the most unforgettable centrepiece you have ever created.

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.

Presenting the crown jewel of the Pedra Gems collection — our Natural Seam Agate XL Oval Cabochon, a breathtaking 30x15xmm gemstone weighing a full 19.5carats. This is the largest, heaviest, and most magnificent stone we offer — a once-in-a-collection natural treasure of extraordinary scale and beauty.

At 30x15mm 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 4mm 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 19.5 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: 30x15x5 mm
• Weight: 19.5 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 30mm it is larger than a standard US quarter dollar (15mm) 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 19.5 carats this is almost four times the weight of our standard 19.5ct 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 4mm deep dome adds a spectacular visual dimension — at 15mm 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 — 19.5 carats, 30x15mm, 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.

Presenting the crown jewel of the Pedra Gems collection — our Natural Seam Agate XL Oval Cabochon, a breathtaking 34x22mm gemstone weighing a full  35.5carats. This is the largest, heaviest, and most magnificent stone we offer — a once-in-a-collection natural treasure of extraordinary scale and beauty.

At 34mm 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 35.5 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: 34x22x6 mm
• Weight: 35.5 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 34mm it is larger than a standard US quarter dollar (22mm) 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 35.5 carats this is almost four times the weight of our standard 35.5ct 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 34mm 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 — 35.5 carats, 34x22mm, 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.

Presenting the crown jewel of the Pedra Gems collection — our Natural Seam Agate XL Oval Cabochon, a breathtaking 38x19xmm gemstone weighing a full 25 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 38x19mm 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 4mm 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 25 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: 38x19x4 mm
• Weight: 25 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 38mm it is larger than a standard US quarter dollar (19mm) 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 25 carats this is almost four times the weight of our standard 25ct 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 4mm deep dome adds a spectacular visual dimension — at 19mm 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 — 25 carats, 38x19mm, 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.

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.