Adjustable Costume Jewelry Ring with Faux Lapis Stone

This item is a piece of costume jewelry, specifically an adjustable ring featuring a large, central faux gemstone. The ring is constructed from a non-precious base metal with a yellow-gold-tone plating. The central element is a rectangular, step-cut imitation stone in a vibrant cobalt or cornflower blue, possibly meant to simulate lapis lazuli or sapphire, though it lacks the natural inclusions or transparency of genuine minerals. The stone is held within a simple bezel setting. The band of the ring is wide and tapers toward the back, where it features an open, bypass-style adjustable shank, a common indicator of mass-produced novelty or fashion jewelry. The physical condition shows significant signs of wear and age; there is noticeable tarnish and pitting across the metal surfaces, particularly on the shoulders of the band where the gold finish has worn away to reveal a darker base metal underneath. This degradation suggests the piece is not made of solid gold. There are no visible maker's marks or hallmarks in the image, further suggesting it is a commercial-grade accessory likely dating from the mid-to-late 20th century. The overall craftsmanship is functional rather than high-end, utilizing industrial casting and stamping techniques.