Vintage Amethyst and Gold-Tone Three-Stone Brooch or Ring

This item is a circular piece of jewelry featuring three oval-cut amethyst gemstones arranged in a trefoil or clover-like pattern. Each purple gemstone is secured by four metal prongs. The stones exhibit a pale to medium violet hue with clear facets, suggesting they are either natural amethyst or synthetic glass/spinel common in mid-20th-century costume jewelry. The gems are encased in a circular gold-tone frame that features a detailed milgrain or textured rope-like border. One side of the inner frame includes a decorative curved 'leaf' or 'ribbon' element, also in a gold-tone finish. Physically, the piece appears to be approximately 1 to 1.5 inches in diameter. The metal shows significant signs of age and patina, with visible wear to the gold plating, especially on the raised edges and the decorative leaf, revealing a darker base metal underneath. This type of wear is typical for gold-filled or gold-plated costume jewelry from the mid-century period (circa 1940s-1960s). The craftsmanship indicates an assembly-line production style rather than high-end fine jewelry, though the stones appear well-set. No visible maker's marks are present on the front of the item.