Cushion-Cut Greenish-Yellow Gemstone

This item is a loose, faceted gemstone featuring a modified cushion cut. It displays a pale, greenish-yellow hue often associated with minerals such as chrysoberyl, heliodor, or certain types of green beryl. The stone is positioned against a metric ruler for scale, appearing to measure approximately 10 to 11 millimeters in length. The faceting comprises a large table with numerous peripheral facets that contribute to its internal reflections. Material-wise, it appears transparent with decent clarity, although some internal veil-like inclusions or feathers are visible under the table, suggesting a natural origin rather than a synthetic simulant. The condition shows significant 'paper-wear' or facet junction abrasion, particularly visible along the crown facets and the girdle edges. Small nicks (fleabites) are detectable on some of the sharp facet lines, indicating the stone has likely been handled loose or may have moved within its container over time. The craftsmanship of the cut is modern, aimed at maximizing light return through its multi-faceted pavilion. There are no visible maker's marks or laser inscriptions on the girdle from this angle. The overall quality suggests a mid-range commercial gemstone suitable for centering in a ring or pendant mount.

I have virtually examined this cushion-cut greenish-yellow gemstone, measuring approximately 10-11mm. Based on the visual characteristics, the color and inclusion profile are consistent with a natural Heliodor (Golden Beryl) or a light Chrysoberyl. The presence of internal veil-like feathers suggests a natural origin; however, without a refractometer and polariscope test, I cannot definitively rule out synthetic alternatives or tellium-doped glass. The stone exhibits significant 'paper-wear'—visible abrasions along the facet junctions and 'fleabites' on the crown. This level of wear indicates the stone has been stored loose or handled frequently without protection, which necessitates a significant deduction in value as the stone would likely require professional repolishing to be set in high-end jewelry. Market demand for this specific 'lemon-lime' hue is moderate, typically appealing to collectors of secondary beryl varieties rather than the high-premium Emerald or Aquamarine markets. Comparables for 5-6 carat Heliodors (estimated weight based on dimensions) in commercial grades currently trade in the $80-$120 per carat range. The heavy junction wear on this specimen positions it toward the lower end of that spectrum. Factors impacting value include the visible inclusions and the need for lapidary repair. Limitation: This appraisal is based on photographic evidence only. For a definitive valuation and authentication, an in-person examination is required to determine the Refractive Index (RI) and Specific Gravity (SG). A GIA or AGL laboratory report would be necessary to confirm the absence of heat treatment or irradiation, which are common in the beryl family and can affect marketability.