AI Appraisal Estimate

This item is a loose, oval-cut green/teal sapphire gemstone, estimated to be approximately 1.5 to 2.5 carats based on its visual size relative to the handler's finger. The stone exhibits a distinct greenish-blue or teal hue, which is a desirable color variant in the corundum family. The cut appears to be a traditional oval brilliant or mixed cut, featuring a faceted pavilion that helps reflect light, though the polish on the crown facets appears slightly dull or worn in this lighting. In terms of clarity, the gemstone shows visible internal characteristics, often referred to as 'gardens' or silk inclusions, which contribute to a slightly cloudy or translucent appearance rather than being eye-clean for a high-jewelry grade. There are no major visible chips on the girdle or edges, though minor surface abrasions may exist consistent with a loose stone being handled. The craftsmanship of the cut shows symmetrical faceting, suggesting modern lapidary work. The color saturation is moderate, and the presence of natural inclusions suggests it is likely an Earth-mined stone rather than a synthetic, though laboratory testing would be required to rule out thermal treatments common in the trade. This stone represents a contemporary or late 20th-century aesthetic frequently used in custom bespoke jewelry settings.

I have virtually examined this loose oval-cut sapphire, which displays a secondary greenish-teal hue. At an estimated weight of 1.5 to 2.5 carats, the stone occupies a popular size bracket for bespoke engagement rings. The color saturation is moderate; however, the presence of 'silk' and internal 'gardens' impacts the transparency, resulting in a slightly cloudy appearance that prevents it from reaching premium high-jewelry grades. The facet symmetry is consistent with modern lapidary standards, though surface abrasions suggest the stone has been handled frequently. The current market for teal sapphires—often sourced from Montana, Australia, or Nigeria—is strong due to the rising demand for unique alternatives to traditional blue sapphires. While larger ‘eye-clean’ stones in this color range can command significantly higher prices, the visible inclusions in this specimen place it in a more accessible commercial-to-fine category. This valuation is based on visual characteristics and assumes the stone is natural and earth-mined. Several critical factors cannot be verified through images alone: the presence of heat treatment (standard in the trade but impacting value by 20-30%) or the use of diffusion/filling treatments. A definitive appraisal requires a physical inspection using a refractometer and 10x magnification to confirm the refractive index and internal structure. For full authentication and a higher valuation, a report from an accredited laboratory like the GIA or AGL would be necessary to certify the origin and treatment status.