Vintage Black Cabochon Signet Style Ring

This is a substantial signet-style ring featuring a large, oval, high-domed black cabochon, likely onyx or hematite, securely set in a bezel mount. The metal appears to be a mixed metal or gold-toned alloy, displaying a textured finish on the shoulders. The band features distinct diagonal ribbing or a corded texture that wraps around the shank, adding a tactile and rhythmic design element characteristic of mid-20th-century jewelry styles. The metal shows signs of significant wear and age, with a visible dark patina or oxidation in the recessed areas of the textured band, which suggests it may be gold-plated silver (vermeil) or a brass-based alloy. There is some surface scratching and mild dulling on the cabochon stone, consistent with regular use. The overall craftsmanship is sturdy, with a thick shank indicating it was designed for durability. No visible hallmarks or maker's marks are present in the provided view, but the design reflects a masculine or unisex aesthetic common in the 1970s to 1980s. The condition is fair to good, showing signs of honest wear through metallic tarnish and minor abrasions on the stone’s surface.