6.32 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

This listing presents one beautiful translucent brown moonstone, weighing 6.32 carats, cut as an elegant oval cabochon, with precise dimensions of 13.13 by 9.05 by 6.99 millimeters. The piece displays a light color intensity that reads as a warm, delicate brown in transmitted and diffused light, and it carries a softly luminous adularescence that is characteristic of fine moonstones. The cabochon cut and the generous dome are intentionally fashioned to maximize this schiller effect, and the excellent polish enhances surface reflection and tactile smoothness. Clarity has been graded as very slightly included when evaluated at eye level, a practical and honest description that informs the buyer that minor inclusions are present but do not materially interrupt the visual flow or the play of light. Importantly, this moonstone is natural and untreated, with no enhancement of any kind, and it is documented as originating from Ceylon Sri Lanka, a classical source known for yielding moonstones with appealing sheen and consistent material quality. The Natural Gemstone Company offers this gem as a ready to set focal stone for custom jewelry or as a collectible single specimen for a connoisseur of natural feldspar gemstones.

For an educated buyer who values technical detail and provenance, the material composition and optical behavior of this moonstone are key to understanding its appeal and value. Moonstones are members of the feldspar group, commonly composed of intergrown orthoclase and albite layers, and the adularescence observed in this specimen is produced by scattering from those microscopic lamellae. Typical physical constants are helpful to consider when integrating this gem into jewelry, the refractive index sits near 1.52, specific gravity is approximately 2.55 to 2.63, and Mohs hardness ranges around 6 to 6.5, which informs setting and wear considerations. The clarity grade reported as very slightly included at eye level indicates that the inclusions are minor under normal viewing conditions, they do not significantly interrupt the adularescence, and they do not suggest structural weakness. The absence of enhancements further increases the gem s desirability for collectors and ethical buyers who prefer untreated natural material. The oval cabochon format is the traditional and most effective cut to display adularescence, and at 6.32 carats this stone offers a substantive visual presence without being unwieldy, making it versatile for rings pendants and bespoke designs.

From a value perspective this moonstone presents a compelling combination of size color polish and provenance that will appeal to a knowledgeable buyer. Ceylon is historically respected for producing moonstones with stable color and attractive sheen, and the confirmed origin supports a premium over anonymous material. The lack of treatments simplifies valuation and long term care planning, and the cabochon s excellent polish means the stone will require minimal surface rework before setting. Given the gem s Mohs hardness it is advisable to select protective settings for daily wear, such as a bezel or halo that reduces direct impact risk, and to avoid exposure to harsh chemicals extreme heat or ultrasonic cleaners, which can damage the surface or exacerbate existing inclusions. Cleaning with warm soapy water and a soft brush is recommended, and storing the moonstone separately will prevent abrasion from harder gemstones. The Natural Gemstone Company is available to provide additional details such as high resolution images and lighting studies for this specific stone, and we can assist with certification options custom mounting recommendations and shipping arrangements that preserve the gem s integrity. If you value natural provenance clarity and classic adularescence this Ceylon brown moonstone represents a refined choice for a discerning collection or a signature piece of jewelry.