12.82 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

This translucent green moonstone of 12.82 carat presents an elegant oval form, with dimensions of 19.61 x 15.03 x 6.08 mm. The cabochon cut emphasizes the stone density and adularescent clarity, while the eye clean clarity grade, evaluated at eye level, ensures an unobstructed visual field free of notable inclusions. Color intensity is described as intense, providing a saturated green tone that remains consistent across the dome, and the finish is an excellent polish that yields a smooth surface and even luster. No enhancement has been applied to this gem, and its documented origin is Ceylon Sri Lanka, information that supports both provenance and natural character. These attributes combine to present a specimen that is visually striking, well finished, and ready for setting into fine jewelry.

From a material durability perspective, moonstone belongs to the feldspar group and typically exhibits a Mohs hardness in the range of 6 to 6.5, which places it below the very hard gem species but within a range suitable for responsible daily wear. The structure of feldspar includes cleavage planes that can make thin or poorly supported material more susceptible to chipping when subject to sharp impacts. In this instance, the substantial size and thickness of the cabochon, at a depth of 6.08 mm, reduces the relative risk of breakage by providing structural substance beneath the dome, and the cabochon profile removes sharp edges that are typically vulnerable to knocks. The excellent polish reduces microabrasion from routine contact, and the eye clean clarity minimizes stress concentration around inclusions, both of which contribute to improved wear resistance. For jewelry applications that encounter frequent contact, such as rings, the use of protective settings is recommended, while pendants, earrings, and bracelets offer naturally lower impact environments and are therefore particularly well suited to this gem.

Practical handling and maintenance will optimize longevity and preserve appearance, and routine care is straightforward. Clean the stone with warm water, a mild detergent, and a soft cloth or brush, rinse thoroughly, and dry gently, avoid steam cleaning, ultrasonic cleaners, and prolonged exposure to acids or harsh solvents, store the piece separately in a soft pouch or lined compartment to prevent abrasion against harder stones, and avoid deliberate impact or long term exposure to high heat which can alter feldspar stability. When set in rings consider a bezel or partial bezel design that provides a protective collar around the lower girdle, or place the stone in a setting with elevated protective shoulders to minimize lateral impact. The absence of enhancement, along with the clear documentation of origin from Ceylon Sri Lanka, ensures that what you receive from The Natural Gemstone Company is a natural gem with traceable provenance and unchanged material properties. With appropriate setting selection and routine care, this 12.82 carat green moonstone is a durable and beautiful choice for jewelry intended for daily wear.