16.85 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

This listing from The Natural Gemstone Company presents a single semi translucent brown moonstone weighing 16.85 carats, cut as a round cabochon and measuring 14.85 millimeters by 14.65 millimeters by 9.92 millimeters. The gem is evaluated as very slightly included at eye level, which denotes only minor internal characteristics that do not detract from its overall appearance or durability for jewelry. The color intensity is medium and leans to a warm brown, a tone that is increasingly sought after for contemporary and vintage inspired settings. The cabochon cut is traditional for moonstone, optimized to display adularescence and internal glow, and this piece benefits from an excellent polish that enhances surface luster and the soft billowing shimmer characteristic of top quality moonstone. There is no enhancement, and the origin is Ceylon Sri Lanka, a source historically recognized for producing fine feldspar group gemstones and adding provenance value for collectors and connoisseurs.

From a gemological perspective this moonstone is a feldspar variety that exhibits adularescence from microscopic layering of orthoclase and albite, creating a soft light effect that moves beneath the surface when the stone is tilted. The semi translucent clarity combined with very slight inclusions gives the stone depth and a pleasing internal texture while still allowing the shimmer to read clearly to the eye. Its substantial 16.85 carat weight and generous proportions make it ideal for a statement ring, a prominent pendant, or a bespoke design where the cabochon can be protected and showcased. Because the gem is natural and untreated, collectors value its authenticity and stable color, and jewelers appreciate that no filling or dye alters its appearance. Practical considerations include its approximate Mohs hardness in the mid six range which means it should be set with protective prongs or a bezel and cleaned with mild soap and a soft brush, avoiding steam and ultrasonic cleaners. For professional advice on mounting and to request viewing images and certification please contact The Natural Gemstone Company, where we specialize in detailed sourcing information and responsible selection of natural gemstones.