Seam Agate Oval Cabochon 28x18mm 17ct Low Dome – Natural Gemstone

Discover timeless natural elegance with our Natural Seam Agate Oval Cabochon — a beautifully proportioned 28x18x4mm gemstone weighing 17 carats, combining classic oval form with a sleek low-profile dome that makes it one of the most versatile and wearable stones in our collection.

At 28x18mm this oval has a near 1.6:1 length-to-width ratio — widely regarded among jewellers as one of the most flattering and universally appealing oval proportions available. Not too elongated, not too wide, this stone sits in the sweet spot that works beautifully in every setting style from classic fine jewellery to boho wire wrapping.

✦ Stone Specifications:
• Shape: Oval
• Dimensions: 28 x 18 x 4 mm
• Weight: 17 Carats
• Stone Type: Natural Seam Agate
• Cut: Cabochon (flat back, low dome)
• 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 oval pendant & necklace designs
• Oval bezel ring settings
• Wire wrapping & bezel settings
• Everyday wearable pendant designs
• Flush & low-profile bezel settings
• Bridal & occasion jewellery making
• Boho & minimalist jewellery styles
• Crystal healing & grounding energy work

✦ Why This Oval?
Two features make this stone stand out — its classic proportions and its low 4mm dome.

The 28x18mm proportions produce a near 1.6:1 ratio — the golden ratio of oval cabochons. This proportion is the most universally flattering for oval stones because it creates a shape that reads clearly as an oval without looking elongated or stubby. It suits standard oval bezel settings, ring mounts, and pendant blanks that buyers already have in their collection.

The 4mm dome is lower than most cabochons of this size, which carries three practical advantages. For everyday pendant wear, a lower dome sits closer to the skin and catches on clothing less. For bezel settings, lower dome walls are needed making setting easier and the finished piece sleeker. For wire wrapping, wire travels more smoothly and evenly across a flatter surface producing cleaner wrapping lines.

At 17 carats this is a well-weighted stone — substantial enough to feel premium as a pendant centrepiece while remaining perfectly comfortable for daily wear. A reliable, beautiful, endlessly versatile natural gemstone.

✦ 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.

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