20.23 Ct. Blue Flash Cabochon Moonstone from Ceylon (Sri Lanka)

A truly exceptional, translucent blue flash moonstone, weighing an impressive 20.23 carats, presents a rare opportunity for the collector who understands the language of weight and presence. This oval shape gem measures 19.46 x 13.30 x 10.26 mm, and its cabochon cut emphasizes a smooth, domed surface that displays adularescence with unrivaled clarity. Evaluated at eye level, the clarity grade is very very slightly included, a testament to natural character without compromising visual purity. The light color intensity allows the moonlight blue flash to breathe across the stone, while an excellent polish ensures each movement of the gem reveals new nuance. No enhancement has been applied, and the stone originates from Ceylon Sri Lanka, a source renowned for producing moonstones of distinguished quality. Pieces of this carat weight and refinement are seldom offered, positioning this gem as the centerpiece of a private collection or the foundation for a bespoke commission.

The adularescence is the soul of this moonstone, a soft, floating glow that seems to move beneath the surface as the stone is turned, like moonlight drifting across still water. The blue flash appears to rise from the depths, sliding across the dome in a graceful sweep, revealing layered internal structure that speaks to both geology and artistry. At 20.23 carats the phenomenon is large and immersive, a display that engages the eye and invites contemplation, creating a presence that few gemstones can match. The Natural Gemstone Company presents this gem as part of an exclusive selection, offering personalized consultation to ensure the setting and design honor its scale and luminosity. Owning this moonstone is an invitation to join a small circle of connoisseurs, to wear or display a natural marvel that combines substantive carat weight, impeccable polish, and a living, moving light that is both rare and unforgettable.