13.70 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

This white moonstone is a notable example of quality and character, offered by The Natural Gemstone Company. We present a single translucent 13.70 carat oval shape moonstone, with measured dimensions of 18.18 by 13.00 by 8.24 mm, prepared as a classic cabochon. The cabochon cut is the traditional and technically preferred form for moonstones, because it allows the internal optical phenomenon known as adularescence to develop unimpeded. This stone displays a gentle, pearly glow across its surface, which is best appreciated under directional lighting or in motion. The near colorless body tone and translucent character make it versatile in design, enabling the adularescence to read clearly without competing color, and the clean, rounded dome of the cabochon enhances wearability and setting options for both contemporary and traditional jewelry.

From a clarity and grading perspective, this moonstone is evaluated as very very slightly included at eye level. That clarity grade indicates that inclusions are minimal and not readily perceptible to the unaided eye, which is an important attribute for buyers who seek both aesthetic purity and value retention. In moonstones, fine inclusions can sometimes add to the effect by scattering light, but excessive inclusions can obscure adularescence and reduce translucency. In this piece the balance is excellent, preserving a broad, even glow while maintaining a clean visual field. The excellent polish further elevates the perceived quality, producing a smooth, reflective surface that interacts favorably with light, and that finish also aids in precision setting and long term wear.

The origin of this moonstone is Ceylon, Sri Lanka, a historic and respected source for feldspar gemstones, including moonstones and sapphires. Sri Lankan moonstones are prized for their clarity and delicate adularescence, and provenance from Ceylon is a point of interest for collectors and connoisseurs who value geological history and regional characteristics. Importantly for informed buyers, this gem has no enhancement, indicating it is in its natural, untreated state. Untreated provenance is often preferred by collectors and by individuals seeking authenticity and potential for long term appreciation, because treatments can alter the structural and optical properties of a stone. Having a natural, well cut, and well polished specimen of this size and origin supports both aesthetic desirability and investment minded acquisition.

For practical considerations in design and purchase, this 13.70 carat oval cabochon offers several advantages. Its substantial carat weight and generous dimensions allow it to be set as a focal point in a ring, pendant, or brooch, and its near colorless appearance enables pairing with any metal color, including warm yellow gold and cool white metals. The cabochon dome reduces the risk of chipping compared to faceted stones, and the even adularescence will present attractively when the piece is worn. At The Natural Gemstone Company we emphasize accurate description and responsible sourcing, and we are available to discuss setting recommendations, secure shipping, and professional mounting advice. For buyers who value documented origin, natural state, and a refined combination of translucency, adularescence, and polish, this moonstone represents a rare opportunity to acquire a well proportioned, elegant gem that will perform beautifully in both wearable art and curated collections.