8.39 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

This translucent 8.39 carat oval white moonstone measures 15.92 by 12.08 by 6.49 millimeters and is presented as a classic high-domed cabochon, a cut chosen to maximize the stone's intrinsic optical phenomenon, adularescence. The cabochon profile exhibits well-centered symmetry and proportion, with a 6.49 millimeter depth providing an optimal dome-to-span ratio that enhances the floating, schiller-like sheen without sacrificing durability for mounting. Clarity is graded very very slightly included at eye level, indicating practically clean material to unaided observation and ensuring minimal impact on visual performance. Color intensity is near colorless, a comparatively rare grade for moonstone when measured against the more common peach, gray, or milk-white varieties. The surface finish is described as excellent polish, free of noticeable abrasions or polish haze, and the specimen is untreated, no enhancement, retaining natural body color and internal structure. Origin is Ceylon, Sri Lanka, a source historically recognized for producing moonstones with refined adularescence and stable material quality.

From a connoisseur and trade perspective this specimen is notable for its combination of size, color purity, and clarity. Moonstones of this weight and near colorless tone are uncommon in the market, where larger cabochons more frequently display body color or clouding that diminishes adularescence. An 8.39 carat, well-proportioned Ceylon cabochon that reads near colorless with VVS eye-level clarity occupies a niche between collectible gem specimens and practical jewelry-grade stones, making it particularly desirable for center-stone ring applications, bespoke pendants, and high-end design pieces where visual transparency and a clean floating sheen are prioritized. When compared to similar options, this stone’s near colorless intensity allows the adularescent sheen to read with clearer contrast and longer visual reach across the dome. The Natural Gemstone Company sources and certifies this piece with documentation of origin and enhancement status, and we recommend settings that expose the dome to diffuse lighting to best display the adularescence while protecting the girdle and base. For clients seeking a rare, naturally untreated moonstone with exceptional polish and presentation, this specimen represents a technically superior and scarce example in today’s market.