Large Seam Agate Tumble Cabochon 22x17mm 15ct – Pedra Gems

Experience the raw, organic beauty of nature on a grand scale with this Large Natural Seam Agate Tumble Shape Cabochon from Pedra Gems — a generous 22x17mm gemstone weighing 15 carats, shaped into a smooth, flowing tumble form that celebrates the natural character of the stone in its fullest expression.

This is our largest tumble cabochon — significantly bigger and more commanding than our compact 22x17mm tumble, offering a substantial organic canvas of natural Seam Agate banding across a generous 22x17mm face. The smooth, continuously flowing curves have no defined edges, no precise angles — just the pure, honest shape that nature and the cutter's hand have created together.

✦ Stone Specifications:
• Shape: Tumble (Organic Rounded)
• Dimensions: 22x17x5 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.
• 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:
• Large statement pendant & showpiece necklace designs
• Wire wrapping — smooth continuous curves wrap beautifully with no sharp edges or corners
• Oversized boho & nature-inspired jewellery designs
• Electroforming & large copper wrap projects
• Focal stone for macramé & fibre art
• Crystal healing & grounding energy work
• Display & collector pieces
• Bespoke commission jewellery centrepiece

✦ Why This Large Tumble?
Size matters here. At 22x17xmm this tumble cabochon is nearly double the face area of our compact 22x17mm tumble — a genuinely large, statement-scale stone that commands attention as a pendant centrepiece. The generous organic form means the natural Seam Agate banding flows across a wide, open canvas, displaying its full character without constraint.

The tumble shape at this scale is particularly powerful for wire wrapping. The smooth, continuous curves allow wire to travel freely and naturally around the entire perimeter without a single sharp corner or angle to navigate — producing graceful, organic wrapping lines that complement the natural character of the stone perfectly. The larger the tumble, the more room for the wire artist to work — and at 30x18mm there is ample surface area for truly detailed, intricate wire designs.

At 15 carats this is a premium stone with genuine weight and substance — the kind of stone that feels immediately special in the hand. The 5mm dome adds excellent visual depth and warm light play across the polished surface, giving this large tumble a rich, glowing presence that smaller stones simply cannot replicate.

✦ 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.

The tumble shape is the perfect vessel for Seam Agate's organic banding — both the shape and the pattern speak the same natural language of flowing curves and warm, grounded energy.

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

Order today from Pedra Gems and receive this exact hand-selected large natural gemstone — smooth, polished, flat-backed, and ready to become a bold organic centrepiece of your next creation.