Vintage/Antique Platinum Three-Stone Diamond Ring

This item is a vintage or antique ring, likely crafted from platinum as indicated by the context, featuring a three-stone design. The ring showcases three round brilliant or old European cut diamonds set horizontally across the top. Each diamond appears to be individually bezel-set within a square frame, giving a distinctive geometric or Art Deco aesthetic to the piece. The metal surrounding each diamond appears to be highly polished, with contrasting dark lines (possibly oxidation, black rhodium plating, or intricate milgrain detailing) outlining the square settings, enhancing their visual prominence. While the exact size of the diamonds cannot be determined from the image, the central diamond appears slightly larger than the two flanking stones. The band of the ring, visible on the sides of the setting, seems relatively simple and unadorned. There are no visible maker's marks or stamps in the provided image. The overall condition appears good with a consistent patina, suggesting age, but no obvious signs of significant damage, heavy wear, or recent repairs are discernible. The craftsmanship seems detailed, especially in the precise setting of the stones and the clean lines of the square bezels, indicating a good quality piece. The style strongly suggests an origin in the early to mid-20th century, possibly Art Deco or Edwardian revival.