AI Appraisal Estimate

This specimen is a faceted loose gemstone featuring a modified cushion cut with a large table and brilliant-style pavilion faceting. The stone is a transparent light yellowish-green hue, characteristic of either lemon quartz or heliodor (yellow beryl). Measuring approximately 12mm to 14mm based on the background ruler scale, the stone possesses high clarity with no visible internal inclusions to the naked eye. The external condition appears excellent, showing sharp facet junctions and a highly polished crown, suggesting minimal surface wear or abrasions. The stone is currently housed in a square clear plastic protective gem case, typically used for transport and storage by wholesalers or collectors. The symmetry of the faceting indicates professional lapidary work, likely of modern production (late 20th to 21st century). The color saturation is consistent throughout the stone with no apparent zoning. Without refractive index testing, specific mineral identification cannot be confirmed, but the physical presentation suggests a high-quality commercial-grade jewelry stone ready for setting.

Based on my visual examination of this faceted gemstone, the specimen exhibits a modified cushion cut with excellent transparency and a vibrant, light yellowish-green saturation. Measuring approximately 12-14mm, the stone appears to be in pristine condition with sharp facet junctions and no visible internal inclusions, suggesting a clarity grade of 'eye-clean'. While the visual profile is consistent with high-quality Lemon Quartz or a pale Heliodor, specific mineral identification is impossible without a refractive index test and spectroscopic analysis. For this appraisal, I am valuing the item as commercial-grade Lemon Quartz, which is far more common in this size and saturation. The market for mid-sized quartz is stable but suffers from high supply, keeping prices modest. Conversely, if it were verified as Heliodor, the value would increase significantly due to the rarity of beryllium-based minerals compared to silicates. The current valuation reflects the stone's utility as a ready-to-set jewelry centerpiece. Please note that this appraisal is limited by the digital nature of the inspection. A definitive valuation would require an in-person examination using a refractometer and polariscope to confirm the mineral species. Additionally, laboratory certification from a body such as the GIA would be necessary to confirm the absence of heat treatments or synthetic origins which are common in this color range.