10.51 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

This translucent white moonstone weighs 10.51 carat and presents a classical oval outline with precise dimensions of 17.30 x 12.83 x 6.73 mm, cut as a high dome cabochon to emphasize the internal optical phenomena. The gem exhibits a near colorless body color with a translucency that permits soft adularescence to migrate across the dome when viewed in different lighting angles, a characteristic result of the lamellar twinning and layered feldspar structure. Clarity is graded very slightly included at eye level, indicating only minor internal features that do not detract from the overall visual impact, and the surface has been brought to an excellent polish that maximizes light return and the smoothness of the bezel seating surface. No enhancements have been applied to this specimen, and its provenance is Ceylon Sri Lanka, a source known for producing clean, well colored moonstones with classic adularescent response.

From a lapidary and setting perspective this cabochon demonstrates careful material orientation and craftsmanship, the dome axis aligned to the foliation of the feldspar to produce a broad, even sheen rather than a concentrated flash, and the proportions tuned to balance depth of adularescence with wearable profile. The nearly colorless body promotes cool white to subtle blue schiller when light interacts with the microscopically stacked lamellae, and the very slightly included clarity grade is typical of natural orthoclase material, consisting of minute platey or needlelike inclusions that add character without compromising structural integrity. The excellent polish and symmetrical oval outline facilitate secure bezel and prong mounting in both contemporary and period style settings, and the 6.73 mm height provides presence for rings and pendants while remaining comfortable for daily wear. Presented by The Natural Gemstone Company this untreated Ceylon moonstone is suitable for collectors and designers seeking a naturally sourced, technically well executed cabochon that highlights the mineralogical optics of moonstone, and it should be cleaned with mild soap and water and kept away from harsh chemicals and thermal shocks to preserve its polish and adularescence.