Vintage Art Deco Style Engagement Ring

This is a vintage three-stone engagement ring, likely crafted from white gold or platinum, dating approximately to the Art Deco period (circa 1925). The centerpiece features a high-profile cathedral setting with a prominent, round-cut central stone—likely a diamond or a high-quality white sapphire—secured by an eight-prong 'fishtail' or 'basket' setting. Flanking the center stone are two smaller tapered side stones, possibly baguette or trillion cuts, which transition into a sleek, narrow band. The metal exhibits a dull, silver-toned luster consistent with unpolished white gold or platinum that has acquired a natural patina. Physically, the ring shows signs of significant age and wear; there is visible oxidation and accumulated grime deep within the prongs and the under-gallery of the basket, which may obscure a maker's mark or metal purity stamp. The prongs appear thick but slightly unevenly worn, suggesting long-term use. The overall craftsmanship reflects the geometric precision and elevated gemstone mounting typical of the 1920s architecture-inspired jewelry design. The central stone appears to have some surface abrasions and internal inclusions, though its exact clarity would require a loupe for verification.