Seam Agate Rounded Triangle Cabochon 36x16mm 20ct – Freeform

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

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

✦ Stone Specifications:
• Shape: Free Form (Rounded Triangle — organic soft-edged silhouette)
• Dimensions: 36 x 16 x 4 mm
• Weight: 20 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, domed top)
• Finish: High-polish, smooth surface
• Please note: As these are natural gemstones, size and weight may vary slightly. Dimensions may differ by ±0.5mm and weight by ±0.5ct from the listed measurements.
• Shape note: Free form stones are unique by nature — the rounded triangular silhouette, edge curvature, and banding pattern of this stone are individual to this piece and will not be replicated in any other.

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

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

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

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

✦ About Seam Agate:
Seam Agate is a natural chalcedony formed within rock seams and fissures, producing richly layered banding in warm, earthy tones. No two stones share the same pattern, colour, or character — and with a free form cut, not even the shape is ever repeated.

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

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