Vintage 1925 Art Deco Style White Gold or Platinum Three-Stone Engagement Ring

This is a vintage three-stone cocktail or engagement ring, consistent with the Art Deco period circa 1925. The piece features a prominent, large central emerald-cut or radiant-cut clear stone, likely a diamond, white sapphire, or high-quality glass paste, held by a four-prong setting. Flanking the center stone are two tapered baguette-cut side stones, integrated into the shoulders of the shank. The metal appears to be white gold or platinum, showing a soft, aged patina and minor surface abrasions consistent with nearly a century of wear. The side profile reveals a high-profile basket setting with elegant, geometric transitional lines typical of the 1920s decorative arts movement. The shank is relatively thin and tapers slightly toward the base, showing minor thinning from use. There are visible traces of oxidation or biological residue in the crevices of the setting which indicate it has not been professionally cleaned recently. While the internal '1925' mark reinforces its provenance, the overall craftsmanship displays the structural rigidity and classic symmetry of early 20th-century fine jewelry design. No significant chips are immediately visible on the crown of the primary stone, though the facet edges show very slight softening from long-term contact.