11.93 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

One loose translucent white moonstone weighing 11.93 carats, presented in an oval shape, offers a balanced combination of size and classic gemmatic appeal. The gem measures 17.22 by 12.27 by 8.24 millimeters, and is fashioned as a cabochon to emphasize its internal luminosity and surface sheen. Clarity has been evaluated at eye level as very slightly included, indicating small natural features that do not detract from the gemmatic presence when mounted. Color intensity reads as near colorless, providing a clean, pale appearance that allows the stone to act as a neutral yet luminous element in a variety of jewelry designs. The surface finish is graded as excellent polish, and no enhancements have been performed to alter color or clarity. The material is natural moonstone originating from Ceylon Sri Lanka, a provenance known for producing fine feldspar specimens prized for their adularescent qualities.

Visually this moonstone displays the characteristic adularescence associated with high quality specimens, producing a soft, internal glow that shifts subtly with changes in viewing angle and light source. The cabochon cut enhances this effect, producing a smooth domed profile that serves as an optical window into the stone. Under direct light the sheen reads as a cool, pearly white that contrasts gently with the body color, adding depth to the translucent material. The very slightly included clarity grade indicates that eye-visible inclusions are minimal and typically appear as faint wisps or minute phase boundaries, rather than as dominant fractures or clouding. This combination of translucency, near neutral body tone, and a clean polished surface allows the adularescent sheen to remain the focal attribute, producing a pleasing play of light without strong color interference.

From a gemological and practical standpoint, this moonstone should be considered a mid range in durability compared with common jewelry gems, with a Mohs hardness near six to six and a half, and a cleavage that warrants mindful handling during setting and wear. The cabochon profile and the stone dimensions provide a substantial dome height of 8.24 millimeters, which contributes to the visual presence but also increases the need for protective mounting when used in rings or bracelets subject to daily wear. For high wear applications, a bezel setting or a protective halo design is recommended to reduce the risk of edge chips and to secure the stone against knocks. Pendant and earring settings are particularly appropriate uses for this piece, where the cabochon dome can be admired with less exposure to impact. Cleaning is best accomplished with warm water, mild soap, and a soft brush or cloth, avoiding ultrasonic and steam cleaners, and minimizing exposure to abrupt temperature changes and harsh chemicals.

The origin from Ceylon Sri Lanka speaks to a long tradition of feldspar mining and cutting expertise, and this specimen reflects the careful lapidary work required to maximize adularescence while preserving natural material character. The Natural Gemstone Company offers this moonstone as a natural, unenhanced example of Sri Lankan moonstone, and we can provide additional imagery, exact measurements, and documentation upon request to assist in design and appraisal decisions. Professionals and discerning buyers will appreciate the combination of near colorless body tone, excellent polish, and a well proportioned oval cabochon that adapts well to both contemporary and traditional settings. For further technical information, mounting considerations, or to request custom cutting or matching stones, please contact The Natural Gemstone Company and our gem specialists will supply condition reports and mounting recommendations tailored to the intended use.