10.33 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

This translucent 10.33 carat oval grey moonstone is offered by The Natural Gemstone Company as a rare, museum quality specimen for the discerning collector and bespoke jeweler. Sourced from Ceylon Sri Lanka, this cabochon cut gem measures 13.95 x 11.58 x 8.04 mm, and presents an eye clean clarity when evaluated at eye level, an intense color that reads as sophisticated and subtly dramatic, and an excellent polish that enhances its silky surface and internal glow. No enhancement has been applied, ensuring that the gem is completely natural and untouched, and its oval silhouette combined with a generous carat weight creates presence without overwhelming delicate designs. Pieces like this are seldom available, and ownership places you among a very select group who appreciate provenance, craftsmanship, and the quietly powerful beauty of a fine moonstone.

Because of its precise proportions and cabochon profile, this moonstone is ideal for custom jewelry projects where both size and shape matter, and where a jeweler needs a stable, dependable material to build around. The oval form at approximately 14 by 12 millimeters is particularly well suited to a central solitaire pendant, an elevated prong set ring with a tapered shank, a halo engagement style with fine pavé work, or a bespoke signet inspired creation that balances boldness with refinement. The cabochon cut accentuates the stone translucence and any adularescent play, producing a soft ethereal shimmer that reads beautifully in both warm and cool metal tones. Designers will find the stone easy to set and highlight, thanks to its excellent polish and predictable dome height, and clients will appreciate the confidence of knowing the piece is natural and untreated.

The Natural Gemstone Company offers personalized guidance for commissioning settings that honor the character of this moonstone, including suggestions for metal, mounting style, and complementary accent stones, and we limit access to such special gems to preserve their rarity. If you seek a one of a kind creation that announces taste and exclusivity, this 10.33 carat Ceylon moonstone is a superb starting point, and our team is ready to assist with measurements, setting mock ups, and secure private viewings for serious collectors and bespoke projects.