Seam Agate Marquise Cabochon 25x10mm 4.5ct – Natural Gemstone

Bring timeless elegance to your jewellery designs with our Natural Seam Agate Marquise Cabochon — a beautifully elongated 25x10mm gemstone weighing 4.5 carats, cut into the distinctive marquise silhouette beloved by fine jewellery makers and artisan designers alike.

The marquise shape — also known as the navette or "little boat" cut — features an elongated elliptical body tapering to a sharp point at both ends. This iconic double-pointed silhouette is one of the most refined and dramatic shapes in gemstone jewellery, prized for its ability to elongate the finger, lengthen the neckline, and add a sense of movement and grace to any setting.

✦ Stone Specifications:
• Shape: Marquise (Navette)
• Dimensions: 25x10x2 mm
• Weight: 4.5 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:
• Statement pendant & drop necklace designs
• Marquise ring centrepiece settings
• Wire wrapping — both pointed ends provide natural anchor points
• Art deco & vintage-inspired jewellery
• Elongated bezel & navette setting designs
• Crystal healing & energy work
• Collectors of elegant gemstone shapes

✦ Why Marquise Shape?
The marquise is one of the most flattering shapes in all of jewellery making. Its 26x11mm proportions produce a length-to-width ratio of nearly 2.4:1 — a dramatic, elongated form that creates a strong visual line in any design.

When set as a ring stone, the marquise shape visually elongates the finger — a well-known effect that has made it a perennial favourite in engagement and statement ring design. As a pendant, the double-pointed form creates natural movement and a dynamic, directional energy that oval and round stones simply cannot match.

The two pointed tips are a practical advantage for wire wrappers — each tip provides a natural anchor point for wrapping, creating a symmetrical, balanced design with structural integrity at both ends.

At 25x10 alternative jewellery stone. 4.5 carats and 2mm dome, this is a substantial and visually commanding stone — full of rich natural Seam Agate banding across its generous surface area.

✦ 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 pair beautifully with sterling silver, gold-filled, and copper wire settings.

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