AI Appraisal Estimate

This item is a men's signet-style ring featuring a prominent oval-shaped black onyx inlay. The ring is constructed from a yellow metal, likely yellow gold ranging from 10k to 14k based on typical mid-20th-century jewelry standards. The central oval stone is flush-set within a bezel, presenting a smooth, planar surface with a deep, uniform black color characteristic of polished onyx. The shoulders of the ring feature a decorative 'ribbed' or gadrooned texture, consisting of parallel vertical grooves that taper toward the shank. This design element adds visual weight and a classic masculine aesthetic. The overall construction appears substantial, suggesting a cast piece with a solid back or high-quality thick walls. The finish exhibits a bright polish with minor surface abrasions and micro-scratching consistent with gentle wear. No visible hallmark or maker's stamp is prominent in the front-facing view, though they would typically be located on the interior shank. Based on the bold proportions and ribbed shoulder design, this piece is likely from the retro or MCM (Mid-Century Modern) period, spanning approximately the 1950s to the 1970s. The craftsmanship is professional, with clean lines and a secure setting for the stone.

This appraisal is based on a visual examination of a men’s yellow gold signet ring featuring a centered oval black onyx inlay. The piece follows typical Mid-Century Modern design aesthetics, specifically the 1960s-1970s period, characterized by its ribbed or gadrooned shoulders and heavy, flush-set bezel. The onyx displays a high-gloss finish with uniform saturation, typical of standard commercially cut semi-precious stones. The metal displays surface micro-abrasions consistent with light wear, but no structural deformation or thinning of the shank is observed. The market for mid-century men’s jewelry remains stable, with high demand for classic signet styles that offer a bold, masculine profile. Comparable items in 14k gold generally sell within the cited range at estate auctions and secondary markets. The primary factor influencing value is the gold weight, as onyx itself has a low inherent material value. Limitations: This evaluation is performed via digital images only. I cannot definitively verify the gold purity (karatage) or the total gram weight without a physical scale and acid or XRF testing. Furthermore, a physical inspection is required to determine if the onyx is genuine or a glass simulant, and to search for internal hallmarks or maker’s marks that could link the piece to a specific prestige manufacturer, which would increase its premium. Full authentication would require a professional gold density test and close-up loupe inspection of the setting's integrity.