21.12 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

I am delighted to present a singular treasure from The Natural Gemstone Company, a stone that will not only complete an exceptional commission but will also mark its owner as a member of a very select circle. This is one beautiful translucent white moonstone, weighing 21.12 carats, fashioned in an elegant oval shape. The proportions are substantial, with dimensions of 18.88 by 16.06 by 9.54 millimeters, and the gem has been expertly given a cabochon cut that accentuates its inner glow. At first glance you notice the soft, milky translucence and the smooth domed surface, a clarity grade described as very very slightly included when evaluated at eye level, and a near colorless body that allows the internal shimmer to present with serene purity. There has been no enhancement to this moonstone, and its polish is excellent, revealing a finish that catches and slides light like silk. Origin matters in gemstones, and this piece traces its provenance to Ceylon Sri Lanka, a cradle of some of the world most prized feldspar specimens, a detail that further elevates its desirability for collectors and bespoke jewellers alike.

Allow me to guide you through the subtleties that make this moonstone so rare and so special, and why it commands attention from both connoisseurs and those seeking an heirloom piece. The cabochon cut amplifies adularescence, that mystical billowy sheen that moves gently beneath the surface when the stone turns. On this particular example the effect is restrained and refined, not loud, which is precisely the temperament collectors prize for a white moonstone intended for elegant, timeless jewellery. The near colorless body means the light that enters is not colored or absorbed, so the internal play manifests as a cool, silvery blue white, subtly variable with ambient light and viewing angle. With a clarity assessment of very very slightly included at eye level, what we have is transparency enough to hint at internal structure, without visible distractions, a balance that preserves the gem personality while maintaining visual serenity. The excellent polish enhances the smoothness of movement across the dome, giving your eye a soft path to travel and letting the moonstone breathe visually. No enhancements have been applied, so what you receive is the pure, natural character as it was liberated from its Sri Lankan origins, and that natural provenance adds an unrepeatable narrative that only genuine, unaltered gemstones can offer.

As a gemstone specialist at The Natural Gemstone Company, I envision this moonstone as the central gesture in a number of bespoke designs, and I can help you realize the exquisite potential of such a unique piece. At 21.12 carats and with the generous oval dimensions provided, this cabochon already asserts presence, making it ideal for a statement ring that reads as dignified rather than gaudy, a one of a kind pendant that becomes the quiet hero of a refined necklace, or an artistic brooch where metal work and setting technique can frame the stone much like a painting in a custom frame. Because the piece is naturally translucent and displays subtle adularescence, I would recommend settings that allow light from above and the sides to interact with the dome, such as open back bezels or minimal prong settings with a thoughtful gallery. Metals like warm rose gold will impart a soft complementary glow, while platinum or white gold will accentuate the stone pure, cool luminosity. If you prefer an antique sensibility, custom hand engraving or milgrain details can frame the moonstone with period charm, whereas a contemporary minimalist bezel will emphasize its modern, serene beauty. Given the weight and dimensions, professional setting is advised to ensure secure mounting and comfortable wear, and our in house artisans at The Natural Gemstone Company are available to create CAD renderings or hand fabricate a setting that respects the integrity of this singular stone.

Owning this particular moonstone is an invitation to rarity, because stones of this size and character from Ceylon are seldom presented in a form so ready for immediate design and enjoyment. We handle a very limited number of such exceptional cabochons each year, and this white moonstone is a one of a kind offering from our current collection. If you wish to reserve it, commission a custom setting, or arrange a private viewing, we will prioritize your enquiry and provide detailed images and measurements, care guidance, and provenance discussion to ensure your confidence in the purchase. To introduce you to its care, gentle warm soapy water and a soft cloth will maintain the polish and surface, avoid ultrasonic cleaners and harsh chemicals, and remove jewelry before strenuous activity to protect the dome. At The Natural Gemstone Company we take pride in matching exceptional stones to discerning owners, and this moonstone is a perfect example of a gem that becomes not just an ornament but an emblem of taste and individuality. Please contact us at your convenience to discuss the next steps, and allow us to guide you through the bespoke process of making this rare white moonstone into a treasured, wearable masterpiece.