Gold Signet Style Ring with Oval Onyx Inlay

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.