40.29 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

From the moment this moonstone first formed deep within the ancient earth of Ceylon, Sri Lanka, it began a slow and patient journey that would span millennia. Layers of feldspar and albite shifted and cooled, trapping microscopic lamellae that now scatter light in a soft, lunar sheen. Miners guided by generations of local knowledge found the rough nodules in pockets of weathered rock, and each discovery carried with it the stories of the land and the hands that worked it. In Sri Lanka moonstone has long been cherished not only for its beauty, but for a cultural connection to the night sky and to quiet reflection. This particular piece, preserved in translucent near colorless material, preserves those layered histories and the geological patience that gave it form.

When our gem specialists at The Natural Gemstone Company first examined the rough, they recognized potential that went beyond size alone. The material responded to light with a gentle internal glow that promised an elegant cabochon, and so the stone was carefully planned and cut to bring forward its best qualities. The final result is a single oval cabochon weighing 40.29 carat, with precise dimensions of 23.95 x 21.78 x 11.14 mm. Its clarity is described as very very slightly included when evaluated at eye level, a testament to the careful selection and cutting that minimized any internal features without compromising the gem s natural charm. The color intensity is near colorless, allowing the milky translucence and subtle play of light to be the star. No enhancements have been applied, and the polish achieved is excellent, offering a smooth, satiny dome that invites the eye to travel across its surface.

As you hold the oval cabochon you will notice how the cut and polish work together to transform geology into emotion. The cabochon surface captures and diffuses light so that the stone seems to glow from within, a phenomenon often described by poets and jewelers as moonlight trapped in mineral form. With its generous size and classic oval silhouette, the gem reads as both modern and timeless, large enough to anchor a statement piece and graceful enough to sit at the heart of a bespoke engagement jewel. The translucency creates depth, and the very very slightly included clarity lends a sense of authenticity that polished perfection sometimes lacks. Under different angles and lighting the surface will whisper variations in brightness, offering a quiet, living dialogue with the wearer.

At The Natural Gemstone Company we believe that provenance and care matter as much as the gem itself, and we present this stone with full disclosure of its origin and characteristics. This moonstone arrives from Ceylon, Sri Lanka, untouched by treatments and fully assessed for its optical and physical qualities. For setting we recommend designs that allow light to reach the domed surface from multiple directions, such as open backed bezels or low prong mounts paired with warm metals to enhance the stone s soft glow. For everyday care simple measures will preserve its beauty, such as avoiding harsh chemicals, storing it separately to prevent abrasion, and occasional gentle cleaning with a soft cloth and mild soap and water. If you seek a centerpiece that carries landscape and lore within its depths, this 40.29 carat white moonstone from The Natural Gemstone Company is a rare opportunity to own a gem with geological history, cultural resonance, and crafted excellence.