Heart Shape

Embrace pure natural beauty with our Natural Seam Agate Tumble Shape Cabochon — a wonderfully organic 21x15x5mm gemstone weighing 11.5 carats, shaped into a smooth, softly rounded tumble form that echoes the natural character of a polished river stone.

Unlike geometric cuts such as oval, round, or pear, the tumble shape has no defined edges, precise angles, or symmetrical outline. Instead it flows freely — curves shifting gently into one another, creating an entirely natural, organic silhouette that is as individual as the banding pattern within the stone itself. It is nature at its most honest and beautiful.

✦ Stone Specifications:
• Shape: Tumble (Organic Rounded)
• Dimensions: 21 x 15 x 5 mm
• Weight: 11.5 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: Tumble shapes are unique by nature — the organic silhouette of this stone is individual to this piece and will not be replicated in any other.

✦ Perfect For:
• Boho & nature-inspired pendant designs
• Wire wrapping — smooth curves wrap beautifully with no sharp edges
• Organic & freeform jewellery collections
• Electroforming & copper wrap projects
• Crystal healing & energy work — tactile, comfortable to hold
• Macramé & fibre art focal stones
• Meditation & pocket stone display
• Collectors of natural organic gemstone forms

✦ Why Tumble Shape?
The tumble shape is one of the most beloved forms among crystal healers, boho jewellery makers, and natural stone collectors. Its smooth, rounded, flowing silhouette feels instinctively natural in the hand — warm, comfortable, and deeply organic.

For wire wrappers, the tumble shape is a joy to work with. The absence of sharp corners or defined edges means wire flows smoothly and continuously around the perimeter without catching or requiring tight corner wraps. The result is naturally graceful, fluid wire work that complements the organic character of the stone perfectly.

At 21x15mm this tumble cabochon is a versatile mid-size — large enough to make a clear pendant centrepiece while compact enough for everyday wearable jewellery. The 5mm dome gives the stone excellent depth and a satisfying, rounded tactile quality.

At 11.5 carats this is a well-weighted stone with real substance — the weight and smooth form together create a grounded, satisfying quality that crystal healing practitioners particularly appreciate.

✦ 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 tumble shape is the perfect vessel for Seam Agate's organic banding — both the shape and the pattern speak the same natural language, creating a stone that feels completely at home in the world and deeply connected to the earth.

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 natural gemstone — smooth, polished, flat-backed, and ready to bring organic natural beauty to 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.

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 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.

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.

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.

Discover the natural beauty of our Seam Agate Heart Shape Cabochon — a stunning gemstone prized for its distinctive banded patterns and smooth, polished surface.

Each piece is a unique creation of nature, featuring the signature earthy tones and flowing lines that make Seam Agate one of the most sought-after stones for artisan jewelry makers.

• ✦ Perfect For:
  • Pendant & necklace making
  • Wire wrapping projects
  • Ring & earring settings
  • Crystal healing & chakra work
  • Resin art & craft projects

✦ Stone Details:
• Shape: Heart                                                                                                                          • Size & Weight: 24x25x5 mm & 24.5ct
• Cut: Cabochon (flat back, domed top)
• Stone Type: Natural Seam Agate
• Finish: Smooth, high-polish
• Back: Flat, ready to set

✦ Why Choose Natural Seam Agate?
Seam Agate is a variety of chalcedony formed in the seams and cavities of host rock. Each cabochon carries one-of-a-kind banding patterns — no two stones are exactly alike. Known for its grounding energy and earthy aesthetic, it is a favorite among jewelry designers and crystal enthusiasts alike.

Whether you are a professional jeweler or a passionate hobbyist, our Seam Agate Heart Cabochon delivers both beauty and quality to elevate your creations.