Mixed-Metal Band Ring with Dark Gemstone

This is a substantial mixed-metal band ring, likely crafted from sterling silver with yellow gold or brass accents. The ring features a wide, tapered band with a bold, architectural design characteristic of late 20th-century contemporary jewelry. At the center is a bezel-set circular dark gemstone, appearing deep purple or black, possibly onyx or amethyst. The shoulders are decorated with thick, raised horizontal ribs punctuated by rows of golden spherules or 'caviar' beading, suggesting an influence from designers like David Yurman or Lagos. The metal shows significant signs of wear, including a heavy surface patina, multiple fine scratches, and darkening in the recessed areas (oxidation). The design is stout and robust, with a thick shank that tapers slightly. No maker's marks or fineness stamps are visible from this angle, but the craftsmanship suggests a piece of designer or high-quality bridge jewelry. The ring sits atop a tangled pile of various chains and costume jewelry, indicating it is part of a larger collection or estate grouping.

I have conducted a visual examination of this mixed-metal band ring. The piece exhibits a bold, architectural aesthetic reminiscent of the late 20th-century 'Modernist' movement, specifically echoing the design language of high-end bridge jewelry brands like Lagos or David Yurman. The band appears to be sterling silver with 14k or 18k yellow gold accents, featuring a bezel-set dark gemstone—likely black onyx or deep violet amethyst. Condition is fair to good; the piece shows a heavy organic patina and surface abrasions consistent with frequent wear. The market for designer silver/gold mixed-metal jewelry remains robust, with collectors valuing the 'heavy' feel and recognizable ribbed/spherule motifs. The current valuation reflects the secondary market for high-quality vintage bridge jewelry. Limitations: My assessment is based solely on the provided image. I cannot definitively verify metal fineness (e.g., .925 vs. base metal) or the natural vs. synthetic origin of the gemstone without acid testing and gemological equipment. To provide a definitive authentication, an in-person inspection of the interior shank for hallmarks (such as '925' or a designer signature) is required. Furthermore, professional ultrasonic cleaning would be necessary to reveal any hidden fractures or inclusions that might alter the final retail replacement value.