2.65 Ct. Cabochon Moonstone from Madagascar

One beautiful translucent 2.65 carat trillion shape blue flash moonstone is offered by The Natural Gemstone Company, an elegant collector quality gem that brings a rare combination of soft luminosity and clean, modern geometry. This gem measures 8.64 x 8.52 x 5.12 mm, and is fashioned as a cabochon cut to best display its adularescent play, a blue flash that moves beneath the surface as the stone is turned. The clarity grade is eye clean, evaluated at eye level, giving you a gem that reads as pristine to the unaided eye while still retaining the natural character that collectors and designers prize. The color intensity is medium light, providing a gentle, ethereal body color that amplifies the blue sheen, and the polish is excellent, resulting in a silky surface that maximizes light return and tactile appeal. Enhancement is none, this moonstone is untreated and natural, and its origin is Madagascar, a source known for producing moonstones with fine adularescence and attractive translucency.

Visually this blue flash moonstone captivates with a pearly to silvery body that allows the blue sheen to float as a soft internal glow, a hallmark of quality moonstone. The trillion shape is contemporary yet timeless, offering triangular symmetry with gently rounded corners that make it versatile for many design styles. The cabochon cut has been executed to balance height and spread, preserving enough dome to create intense flash while maintaining wearability in a range of settings, from rings to pendants, and even as a focal piece in artisan jewelry. Because the stone is translucent, light passes through the body and interacts with the layered structure of the feldspar to produce the signature adularescence, sometimes described as a moonlit sheen, which is especially appealing to customers who appreciate subtle, moving color rather than static sparkle. This gem photographs beautifully under diffused light and takes a polished setting to showcase the blue flash in motion.

For shoppers who also consider opal varieties, please note that this moonstone shares a similar soft, white luminous character that is often sought in White Opal, and it can serve as an alternative when a more durable, slightly more structured gem is desired. White Opal is known for its light body tone and milky translucence, and while opal is a silica based hydrated mineraloid with play of color coming from diffraction, moonstone is a feldspar that produces adularescence through light scattering in layered crystal structures. The key difference to bear in mind is that moonstone, as in this specimen, shows a directional sheen that seems to glide beneath the surface, whereas White Opal may display broad flashes or pinpoints of color across its surface. For designers and collectors seeking a serene, moonlit aesthetic with reliable stability and no enhancement, this blue flash moonstone from Madagascar offers a compelling choice, and it complements White Opal in mixed gem palettes or themed collections that celebrate pale, luminous stones.

Care and confidence are part of the experience when purchasing from The Natural Gemstone Company, we recommend simple care for this moonstone, avoid prolonged exposure to harsh chemicals and extreme heat, clean with warm soapy water and a soft brush, and store separately from harder gems to prevent accidental abrasion. Although moonstone is moderate in hardness compared with many gem materials, the excellent polish and cabochon profile help shield it from everyday wear, and a protective bezel setting is an ideal way to keep the edges safe while displaying the stone prominently. We provide full disclosure on origin and treatments, this gem is natural, untreated, and Madagascar sourced, and additional services such as gemological reports or custom mounting advice are available upon request. If you would like images under specific lighting, measurements verified, or design recommendations for integrating this trillion moonstone into a bespoke piece, our gem consultants at The Natural Gemstone Company are ready to assist, we also offer secure shipping and careful packaging to ensure your gem arrives in pristine condition.