Products

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.

Discover a truly one-of-a-kind gemstone with our Natural Seam Agate Free Form Cabochon — a beautifully organic 21x17x4mm stone weighing 10 carats, shaped by nature into a captivating blend of an egg-like roundness and a gentle triangular taper.

This free form cabochon is unlike any standard cut. Its soft, rounded body flows naturally into a subtle point, creating a silhouette that is both organic and compositionally dynamic — part egg, part triangle, entirely unique. No geometric tool created this shape; nature did.

✦ Stone Specifications:
• Shape: Free Form (organic egg-triangle mixed silhouette)
• Dimensions: 21 x 17 x 4 mm
• Weight: 10 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 egg-triangle silhouette is a natural characteristic of this individual piece and will not be identical to any other stone.

✦ Perfect For:
• Wire wrapping & freeform jewellery designs
• Organic & boho pendant settings
• Electroforming & copper wrap projects
• Nature-inspired jewellery collections
• Crystal healing & energy work
• Collectors of rare & unusual gemstone shapes

✦ Why Free Form?
Free form cabochons are the most prized stones among creative jewellers precisely because their shape cannot be replicated. Each piece demands an entirely original design — making every finished jewellery piece inherently unique.

The egg-triangle mix of this stone gives it a natural visual tension that standard oval or round stones simply cannot offer. The soft rounded upper body transitions into a gentle tapered base, creating natural movement and a beautiful organic profile.

At 21x17mm and 4mm dome, this stone is a compact yet impactful size — versatile enough for a pendant, ring, or brooch centrepiece without being overwhelming.

✦ 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 flow, or outline — every cabochon is a geological work of art carrying millions of years of natural history.

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

Order today and receive this exact hand-selected gemstone — fully polished, flat-backed, and ready to inspire a design as unique as the stone itself.

Embrace the beauty of nature's own artistry with our Natural Seam Agate Free Form Cabochon — a striking 34x14x5mm gemstone weighing 19 carats, shaped entirely by nature into a captivating triangle-like silhouette.

Unlike standard precision-cut stones, this free form cabochon is shaped by hand to follow the natural contours of the rough agate, preserving every unique curve and edge. The elongated, tapered form makes it an exceptional choice for one-of-a-kind jewellery designs that cannot be replicated.

✦ Stone Specifications:
• Shape: Free Form (natural triangle-like silhouette)
• Dimensions: 34 x 14 x 5 mm
• Weight: 19 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 triangle-like outline is a natural characteristic of this individual piece and will not be identical to any other.

✦ Perfect For:
• Wire wrapping & freeform jewellery designs
• Long pendant & statement necklace settings
• Boho & artisan jewellery styles
• Electroforming & copper wrap projects
• Crystal healing & energy work
• Collectors of rare & unusual gemstone shapes

✦ Why Free Form?
Free form cabochons are among the most sought-after stones for creative jewellers. Because no two shapes are ever the same, each piece demands a truly original design — making the jewellery made from it inherently one of a kind.

At 34x14mm, this elongated triangle form offers a beautifully dynamic composition. Its narrow width contrasted with its length creates natural visual movement — ideal for drop pendants and wire-wrapped statement pieces.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, resulting in rich, flowing banded patterns in warm earthy tones. Each stone is a geological work of art, carrying millions of years of natural history within its layers.

Revered for its grounding and stabilising energy, Seam Agate is a favourite of both crystal healers and artisan jewellers worldwide.

Order today and receive this exact free form gemstone — hand-selected, fully polished, and ready to inspire your next creation.

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.

Experience the beauty of nature's own geometry with our Natural Seam Agate Freeform Rounded Corner Triangle Cabochon — a captivating 31x15x5mm gemstone weighing 18 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: 31 x 15 x 5 mm
• Weight: 18 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 31x15mm 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.

Celebrate the beauty of natural gemstones with our Natural Seam Agate Heart Shape Cabochon — a beautifully balanced 18x20x5mm stone weighing 14.5 carats, cut into a classic, full heart silhouette that is as timeless as it is striking.

At 18x20mm, 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: 18x20x5 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:
• 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 18x20mm 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 14.5 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.

Introduce a touch of natural elegance to your jewellery collection with our Natural Seam Agate Heart Shape Cabochon — a beautifully cut 19x19x5mm gemstone weighing 12.5 carats.

This perfectly symmetrical heart cabochon is crafted from genuine Seam Agate, showcasing the stone's signature earthy banding in a romantic shape that's ideal for meaningful, handcrafted jewellery pieces.

✦ Stone Specifications:
• Shape: Heart
• Dimensions: 19 x 19 x 5 mm
• Weight: 12.5 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:
• Heart pendant & necklace designs
• Valentine's Day & anniversary jewellery
• Wire wrapping & bezel settings
• Statement ring centrepiece
• Crystal healing & heart chakra work
• Thoughtful gift for gemstone lovers

✦ Why This Stone Stands Out:
At 19x19mm, this heart cabochon is a generous and perfectly proportioned size — large enough to make a bold statement, yet refined enough for everyday wear. The 5mm dome height gives the stone a satisfying depth and excellent light play across its polished surface.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed in the seams and cavities of host rock, giving each stone its one-of-a-kind banding pattern. No two pieces are identical in colour, flow, or character — making every cabochon a truly unique treasure.

Associated with grounding, calm, and inner strength, Seam Agate is a beloved choice among crystal healers and jewellery artists alike.

A heartfelt stone in every sense — order today and receive a hand-selected, naturally beautiful gemstone ready to be transformed into something extraordinary.

Express natural beauty and heartfelt elegance with our Natural Seam Agate Heart Shape Cabochon from Pedra Gems — a beautifully proportioned 19x21x5mm gemstone weighing 15 carats, cut into a deep, upright heart silhouette that radiates warmth, romance and natural character.

At 19x21mm this heart is 2mm taller than wide — a proportion that produces one of the most naturally satisfying and recognisable heart silhouettes in the Pedra Gems collection. The lobes are full and rounded at the top, flowing gracefully downward to a strong, decisive central point that gives the heart its most classic and timeless form.

✦ Stone Specifications:
• Shape: Heart
• Dimensions: 19 x 21 x 5 mm
• Weight: 15 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
• Wire wrapping & heart bezel settings
• Statement heart ring centrepiece
• Valentine's Day & anniversary jewellery
• Crystal healing & heart chakra work
• Meaningful romantic gift for gemstone lovers
• Bridal & occasion jewellery making
• Everyday wearable heart pendant

✦ Why This Heart?
The 19x21mm proportions give this heart a naturally upright, deep character — the extra 2mm of height over width creates full, generous lobes at the top and a confident downward point that is deeply satisfying in both pendant and ring settings.

At 15 carats this stone sits in the ideal mid-size range — substantial enough to feel genuinely meaningful and premium as a gift or pendant centrepiece, yet light and compact enough for comfortable everyday wear. It is the sweet spot between the dainty small hearts and the bold large statement pieces in the Pedra Gems collection.

The 5mm dome adds excellent depth and warm light play across the polished natural agate surface — a classic dome height that gives this heart beautiful visual presence from every angle.

✦ Your Pedra Gems Heart Collection:
With over 10 heart listings, Pedra Gems offers one of the most comprehensive natural agate heart ranges available. This 19×21mm stone is a classic mid-size upright heart — larger and more substantial than our small hearts (13×14mm, 15×16mm) yet more intimate and wearable than our large statement hearts (24×25mm, 26×29mm).

✦ 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.

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.

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.

Celebrate the beauty of natural gemstones with our Natural Seam Agate Heart Shape Cabochon — a beautifully balanced 20x21x5mm stone weighing 16 carats, cut into a classic, full heart silhouette that is as timeless as it is striking.

At 20x21x5mm, 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: 20x21x5 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 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 20x21x6 mm 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 16 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.

Express natural beauty and heartfelt elegance with our Natural Seam Agate Heart Shape Cabochon from Pedra Gems — a beautifully proportioned 21x20x5 mm gemstone weighing 18.5carats, cut into a deep, upright heart silhouette that radiates warmth, romance and natural character.

At 21x20mm this heart is 5mm taller than wide — a proportion that produces one of the most naturally satisfying and recognisable heart silhouettes in the Pedra Gems collection. The lobes are full and rounded at the top, flowing gracefully downward to a strong, decisive central point that gives the heart its most classic and timeless form.

✦ Stone Specifications:
• Shape: Heart
• Dimensions: 21x20x5 mm
• 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:
• Classic heart pendant & necklace designs
• Wire wrapping & heart bezel settings
• Statement heart ring centrepiece
• Valentine's Day & anniversary jewellery
• Crystal healing & heart chakra work
• Meaningful romantic gift for gemstone lovers
• Bridal & occasion jewellery making
• Everyday wearable heart pendant

✦ Why This Heart?
The 21x20mm proportions give this heart a naturally upright, deep character — the extra 2mm of height over width creates full, generous lobes at the top and a confident downward point that is deeply satisfying in both pendant and ring settings.

At 18.5 carats this stone sits in the ideal mid-size range — substantial enough to feel genuinely meaningful and premium as a gift or pendant centrepiece, yet light and compact enough for comfortable everyday wear. It is the sweet spot between the dainty small hearts and the bold large statement pieces in the Pedra Gems collection.

The 5mm dome adds excellent depth and warm light play across the polished natural agate surface — a classic dome height that gives this heart beautiful visual presence from every angle.

✦ Your Pedra Gems Heart Collection:
With over 10 heart listings, Pedra Gems offers one of the most comprehensive natural agate heart ranges available. This 21x20mm stone is a classic mid-size upright heart — larger and more substantial than our small hearts (21x20mm) yet more intimate and wearable than our large statement hearts (21x20)

✦ 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.

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.

Discover a heartfelt natural treasure from Pedra Gems — our Natural Seam Agate Heart Shape Cabochon, a beautifully proportioned 21x24x4mm gemstone weighing 14.5 carats, cut into a full, upright heart silhouette that radiates warmth, balance and natural beauty.

At 21x24mm 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: 21 x 24 x 4 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 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 21x24mm 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 14.5 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.

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.

Make a bold statement with our Large Natural Seam Agate Heart Shape Cabochon — a striking 24x23x5mm gemstone weighing 22.5 carats, designed for jewellery makers who love to create pieces that truly stand out.

This oversized heart cabochon is one of our largest cuts, offering an impressive canvas of natural Seam Agate banding. Its generous proportions make it a showstopping centrepiece for pendants, statement rings, and bespoke wire-wrapped designs.

✦ Stone Specifications:
• Shape: Heart
• Dimensions: 24 x 23 x 5 mm
• Weight: 22.5 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 pendant & statement necklace designs
• Bold wire wrapping & oversized bezel settings
• Statement cocktail ring centrepiece
• Valentine's Day & anniversary gifts
• Crystal healing & heart chakra work
• Luxury gift for gemstone collectors

✦ Why This Stone Stands Out:
At 24x23mm and 22.5 carats, this is a large, impressive heart cabochon that commands attention. The slightly wider-than-tall proportion gives it a natural, organic heart silhouette — full and expressive. The 5mm dome adds beautiful depth and a rich tactile quality that smaller stones simply cannot match.

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within the seams and fissures of host rock, producing its distinctive flowing, layered banding. Each stone carries its own unique pattern of colour and line — no two are ever alike.

Celebrated for its grounding and calming energy, Seam Agate is a favourite among crystal practitioners and artisan jewellers alike. Its earthy tones complement both silver and gold settings beautifully.

A truly one-of-a-kind natural gemstone — order today and receive a hand-selected piece ready to become the heart of your next creation.

Express natural beauty and heartfelt elegance with our Natural Seam Agate Heart Shape Cabochon — a beautifully proportioned 24x25x5mm gemstone weighing 23 carats, cut into a classic upright heart silhouette that combines generous size with timeless romantic form.

At 24x25mm, this heart is slightly taller than it is wide — a proportion that produces one of the most recognisable and classic heart silhouettes in jewellery. The deeper-than-wide form gives the lobes a full, rounded curvature at the top and draws down to a strong, decisive central point — a heart shape that reads clearly, boldly, and beautifully from every distance.

✦ Stone Specifications:
• Shape: Heart
• Dimensions: 24 x 25 x 5 mm
• Weight: 23 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 statement 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

✦ Why This Heart?
The 24x25mm proportions of this cabochon sit in a sweet spot — large enough to make a genuine statement as a pendant centrepiece, yet perfectly shaped for settings that require a classic, upright heart silhouette.

The taller-than-wide proportion is key. Hearts that are wider than tall can look flat or splayed — hearts that are taller than wide, like this one, have a deep, full-bodied curvature and a strong downward point that gives the silhouette its most recognisable and satisfying form. This is the heart shape that most people picture when they close their eyes and imagine a heart.

At 23 carats this is a substantial mid-to-large stone — heavy enough to feel premium and meaningful in the hand, wearable enough for everyday pendants and occasional statement pieces alike.

The 5mm dome adds excellent depth and rich light play across the polished surface — a full, rounded dome that catches light beautifully and gives the stone a warm, glowing presence.

✦ Your Heart Range at a Glance:
With 8 heart listings now in your collection, here is how this stone fits:
Small hearts: 13×14mm (6ct) and 15×16mm (6.5ct) — earrings & dainty pendants
Mid hearts: 19×19mm (12.5ct), 20×19mm (14ct), 20×20mm — classic pendant sizes
Large hearts: 24×25mm (23ct), 24×23mm (22.5ct), 26×17mm (18ct)
XL heart: 26×29mm (35ct) — showpiece collector stone

✦ 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 choice for heart chakra work — promoting love, compassion, and emotional balance.

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