Art Deco Engagement Ring, circa 1925

This is an antique Art Deco period engagement ring, reportedly dated circa 1925. The piece features a high-profile setting crafted in a white metal, likely platinum or 18k white gold, which was standard for the era. The central focal point is a large, transitional or Old European cut clear stone—possibly a diamond or white sapphire—held securely by a sophisticated six-prong cathedral mounting. The shoulders of the ring are accented with smaller faceted baguettes or tapered stones held in geometric channel settings, a hallmark of the 1920s aesthetic. The bands' undergallery shows intricate openwork, illustrating high-quality craftsmanship intended to maximize light entry to the stones. Physical condition appears fair but used; there is notable surface grime and lint across the setting and under the pavilion of the stone, alongside fine scratches and a dulling of the metal consistent with age and frequent wear. The central stone exhibits some visible internal inclusions or cloudiness under the table. While internal stamps are mentioned by the user as ‘cc 1925,’ they are not visible in this specific profile photograph. The structural integrity of the prongs seems intact, though a professional cleaning and tightening would be necessary for a full appraisal.

I have examined the provided images of this Art Deco engagement ring, circa 1925. The piece exhibits the architectural rigor of the early 20th century, characterized by its transitional/Old European cut central stone and geometric baguette accents. The intricate openwork undergallery suggests high-level jewelry craftsmanship consistent with period platinum or 18k white gold work. While the 'cc 1925' marking is noted, this is likely a commemorative or date stamp rather than a manufacturer's hallmark. The condition is fair; significant surface grime and visible inclusions in the central stone suggest a grade in the SI-I range, which tempers the overall valuation compared to flawless specimens. The current market for Art Deco bridal jewelry remains robust, with high demand for authentic period settings over modern reproductions. Comparables for 1.0–1.25ct OEC diamonds in period mountings typically hammer between $4,000 and $7,500 depending on color and clarity. Value is driven by the 'transitional' cut of the stone, which marks the evolution toward modern brilliance. However, this appraisal is subject to severe limitations: I cannot verify metal purity or stone authenticity (natural vs. synthetic) through photographs. A definitive valuation requires a physical inspection to conduct a thermal conductivity test, a spectrographic analysis of the metal, and a microscopic clarity grading. Specifically, the central stone must be cleaned and weighed to provide a narrow market figure. Until then, this estimate assumes a natural diamond of average commercial grade.