0.62 Ct. Rainbow Moonstone from Ceylon (Sri Lanka)

This listing presents one beautiful transparent 0.62 carat cushion shape rainbow moonstone, dimensions 5.85 x 4.73 x 3.70 mm, masterfully cut in a mixed brilliant style to balance scintillation with adularescent flash. The stone displays light color intensity and an excellent polish, and it is untreated, with no enhancement, preserving its natural optical phenomena. Clarity is graded as very very slightly included when evaluated at eye level, which indicates exceptional transparency for a moonstone and allows the characteristic bluish to multicolored schiller to be seen without significant obstruction. Sourced from Ceylon Sri Lanka, this gem combines desirable origin provenance with the aesthetic and structural qualities that educated buyers seek, including precise proportions that maximize light return while maintaining the soft, ethereal glow associated with fine rainbow moonstone.

Inclusions in this specimen serve as unique identifiers that contribute to its individuality and confirm its natural origin. Rather than detracting from value, the very very slight internal features are the fingerprint of the crystal, comprised of fine growth structures and minute platelets that are typical in feldspar group minerals. These internal characteristics are largely invisible to the naked eye but can be documented under magnification, providing a reliable marker for lab reports and long term ownership records. The subtle internal morphology can also influence the direction and intensity of the adularescent flash, giving this stone a particular pattern of color play that will not be replicated exactly in another piece. For collectors and gemologists, such inclusions add provenance, assist in identification, and affirm that no filling or dyeing treatments have been used.

The size and cut make this 0.62 carat cushion rainbow moonstone ideal for a refined solitaire ring, a delicate pendant, or as an accent in bespoke designs where optical performance and natural character are paramount. Being transparent and minimally included, it performs well in both bezel and prong settings while maintaining visual openness and brightness. At The Natural Gemstone Company we emphasize treatment disclosure and origin transparency, and we welcome requests for additional imagery or an independent report to document the stone further. This moonstone is a fine example of natural materiality, combining classic origin, clean clarity, and discreet inclusions that together create a collectible and wearable gem of lasting appeal.