Seam Agate Oval Cabochon 29x19mm 25ct – Natural Gemstone Pedra Gems

Discover timeless natural beauty on a generous scale with our Natural Seam Agate Oval Cabochon from Pedra Gems — a beautifully proportioned 29x19x5mm gemstone weighing 25 carats, combining classic oval form with premium weight and a rich natural Seam Agate character that makes every piece of jewellery made from it uniquely special.

At 29x19mm this oval has a near 1.5:1 length-to-width ratio — one of the most universally flattering and classic oval proportions in jewellery making. This golden oval ratio produces a shape that reads clearly and beautifully as an oval, fitting the widest range of standard oval settings while remaining visually rich and generously sized.

✦ Stone Specifications:
• Shape: Oval
• Dimensions: 29 x 19 x 5 mm
• Weight: 25 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 oval pendant & necklace designs
• Oval bezel ring settings — a commanding ring centrepiece
• Wire wrapping & bezel settings
• Bridal & occasion jewellery making
• Boho & artisan jewellery collections
• Everyday statement pendant
• Crystal healing & grounding energy work

✦ Why This Oval?
The 29x19mm proportions place this stone firmly in the large oval category — noticeably bigger than our standard mid-size ovals yet beautifully proportioned for both pendant and ring settings. At 29mm long it creates excellent visual length on the neckline as a pendant, while the 19mm width ensures the stone has generous face area displaying the full natural banding of the Seam Agate.

The near 1.5:1 ratio is widely regarded as the sweet spot for oval cabochons — long enough to read as distinctly oval rather than round, wide enough to feel rich and substantial rather than narrow. This is the oval proportion that suits the most buyer preferences and fits the widest range of standard settings.

At 25 carats this is a premium stone with genuine weight. Heavier than our 20ct ovals and lighter than our large collector pieces, this stone sits in the ideal range for buyers who want a genuinely substantial natural gemstone for a statement jewellery piece without moving into showpiece territory.

The 5mm dome adds excellent depth and warm light play across the polished natural agate surface — a classic dome height that gives this oval beautiful visual presence and a satisfying tactile quality in the hand.

✦ 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 beloved by crystal practitioners and artisan jewellers worldwide. Its warm earthy tones complement sterling silver, gold-filled, and copper wire settings beautifully.

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