Art Deco style marcasite and purple stone ring

This piece is a decorative cocktail ring featuring a prominent clustered face set with faceted purple gemstones and small metallic pyrite marcasite stones. At the center is a marquise-cut light purple stone, surrounded by four square-cut purple stones set at the cardinal points in bezel or prong settings. The surrounding metal framework is densely paved with small, dark, faceted marcasites displaying a characteristic metallic luster. The metal appears to be silver-toned, possibly sterling silver, with oxidized accents typical of this genre of jewelry to enhance depth and contrast. The overall design exhibits geometric symmetry reminiscent of the Art Deco period or mid-20th-century revival pieces. There are no clearly visible maker's marks, hallmarks, or signatures apparent in this top-down view, meaning the exact age, maker, and material composition remain unverified. The condition appears generally good with minor surface wear consistent with age and use, but without a physical inspection, the material purity and gemstone identities are unconfirmed.

Based on what I can see in the photograph, this item presents as an Art Deco style cocktail ring featuring a marquise-cut central light purple stone, accented by four square-cut purple stones and paved with faceted marcasites in an oxidized silver-toned setting. The styling exhibits geometric characteristics consistent with the 1920s–1930s aesthetic, though it may represent a later mid-to-late 20th-century vintage revival piece. I cannot determine from a photo whether the metal is sterling silver or a base metal alloy, nor can I identify the purple gemstones, which could be natural amethyst, synthetic corundum, or faceted paste/glass. A physical inspection, including testing the metal purity, inspecting interior hallmarks, and gemological testing under magnification, would be needed to clarify these materials. Assuming the piece is sterling silver set with either quartz/amethyst or vintage paste and marcasite, comparable vintage pieces typically realize between $65 and $125 in the secondary decorative jewelry market. If physical examination reveals that the setting is an unhallmarked base metal or a modern costume reproduction, the fair market value would realistically decrease to the $20 to $40 range. Conversely, if documentation or hallmark examination supports an early 20th-century origin with natural untreated amethyst, the value could edge closer to the higher end of the decorative spectrum. Demand for Art Deco and revival marcasite jewelry remains steady among collectors of vintage fashion accessories, though condition—such as ensuring no marcasite stones are missing or loose—plays a critical role in final realizable pricing.