0.85 Ct. Moonstone from Ceylon (Sri Lanka)

This heart shape rainbow moonstone presents a balance of visual appeal and gemological quality, anchored by its 0.85 carat weight. Carat weight remains one of the primary determinants of value for faceted gemstones, and a stone approaching the one carat threshold carries distinct market relevance. At 0.85 carat, this moonstone occupies a favorable position for collectors and jewelers seeking a substantial size without entering higher price brackets reserved for full carat and above specimens. The weight, combined with the gem’s transparency, enhances light transmission and the perceptible adularescent effect, making the gem appear more lively and giving its subtle play of color greater presence than lighter examples. The Natural Gemstone Company emphasizes that this weight is a meaningful factor when assessing rarity and resale considerations, because larger transparent moonstones with quality cutting and polish are less common than smaller or more heavily included material.

The proportions of this gem contribute to its optical performance and overall value, with dimensions of 5.61 x 6.24 x 4.57 mm and a mixed brilliant cut. The mixed brilliant design aims to utilize both pavilion and crown facets to maximize brilliance and adularescence, while maintaining the heart outline. Achieving a clean heart shape at these proportions requires exacting lapidary skill, and the process typically reduces rough weight, which in turn elevates the rarity of a well formed, heavier finished stone. The excellent polish reported for this piece further accentuates surface reflectivity and facet definition, allowing light to interact with the internal structure with minimal scattering due to surface irregularities. These combined factors mean the 0.85 carat weight is not merely a numerical measure but an integral component of the gem’s ability to display attractive optical effects and optical transparency.

Clarity and color are central to the assessment of moonstone quality, and this specimen has an eye clean clarity grade, evaluated at eye level, and a faint color intensity. Eye clean clarity indicates that there are no inclusions visible without magnification, which is particularly significant for moonstone, a gem type that often exhibits internal features such as platelets or veils. The absence of visible inclusions enhances both aesthetic appeal and the perceived value, because inclusions can disrupt adularescence and light transmission. The faint color intensity allows the characteristic bluish and multicolored sheen of a rainbow moonstone to be appreciated without being masked by strong body color. The combination of transparency, faint body color, and eye clean clarity makes this 0.85 carat heart shape notable, as transparent, well cleaved moonstones with such attributes are infrequent in comparable sizes and shapes.

Provenance and treatment status further inform the market position of this gem, with origin recorded as Ceylon, Sri Lanka, and enhancement listed as none. Ceylon has a longstanding reputation for producing high quality gemstones, and documentation of origin contributes to the gem’s story and appeal to specialized collectors. The lack of enhancement confirms that the optical qualities, including the adularescence and clarity, are natural, and that no filling, dyeing, heating, or surface treatment has been applied to alter appearance. When combined with the measured weight of 0.85 carat, the no enhancement status supports a conservative valuation approach, because untreated stones of this size and form are more scarce than treated or synthetic alternatives. The Natural Gemstone Company presents this stone with precise measurements and gemological descriptors to allow informed assessment by connoisseurs and professionals, emphasizing that the weight, shape, cut, clarity, and origin together define both its rarity and its practical desirability for use in fine jewelry or as part of a curated collection.