AI Appraisal Estimate

This item is a ring featuring a prominent oval-shaped black cabochon, likely onyx, set within a simple bezel mounting. The stone exhibits a high-gloss, reflective surface with a deep, uniform black saturation and no visible inclusions on the crown. The setting appears to be made of a silver-toned metal, possibly sterling silver based on the color and surface wear. The bezel is relatively thick and surrounds the stone securely. The ring's shank is split or features parallel bands near the shoulder, suggesting a mid-century or modern minimalist design. The metal displays a mild patina and light surface scratches consistent with age and gentle wear, particularly along the rim of the bezel. No visible maker's marks or hallmarks are immediately apparent in the image, but the construction indicates a solid level of craftsmanship typical of mid-20th-century costume or studio jewelry. The overall condition is good, with the stone appearing chip-free and the setting retaining its structural integrity. This style is characteristic of the 1960s or 1970s modernist movement.

I have examined the images of this mid-century modernist oval black onyx ring. The item displays high-quality hand-finishing characteristic of studio jewelry from the 1960s or 70s. The cabochon exhibits excellent polish with no visible surface abrasions, while the silver-toned setting shows a natural patina and light micro-scratches consistent with age. Based on the luster and construction, I have appraised this as a sterling silver piece with genuine onyx. Currently, the market for modernist silver jewelry remains steady, with high demand for wearable, minimalist geometric designs. Similar unbranded studio pieces typically sell within the $60 to $120 range at specialized vintage boutiques or online auctions. The lack of visible hallmarks slightly moderates the value compared to signed pieces by known designers like Georg Jensen or Taxco masters. Please note that this valuation is based solely on visual inspection. A full authentication would require in-person testing to confirm the metal's fineness via acid or XRF testing, as well as a microscopic inspection of the stone to rule out glass or resin imitations. Verification of any internal hallmarks or maker's marks not visible in the provided photographs could significantly elevate the appraisal, particularly if linked to a recognized artisan of the modernist movement.