Tiffany & Co. 18k Gold Amethyst and Diamond Cocktail Ring

This is a high-jewelry cocktail ring featuring a substantial central oval-cut amethyst weighing approximately 9 carats. The amethyst exhibits a deep, vibrant royal purple saturation with excellent internal transparency. It is securely prong-set within a textured 18k yellow gold mounting. Flanking the central stone are 12 round-brilliant diamonds totaling approximately 1.5 carats, arranged in cluster formations on the shoulders to enhance the ring's brilliance. The gold work features a distinctive scalloped or 'sunburst' textured border surrounding the amethyst, characteristic of Mid-Century to Retro-style designs often produced by Tiffany & Co. during the mid-20th century. The ring has an approximate total metal weight of 16.6 grams, indicating a heavy, solid construction of high quality. While the image is slightly soft, the stones appear well-set with no visible chips or fractures. The metal shows a gentle patina consistent with a well-maintained vintage piece. It is housed in a professional black velvet display case, underscoring its luxury status.

I have virtually examined this impressive cocktail ring, attributed to Tiffany & Co. The piece is a quintessential example of mid-20th-century luxury design, likely dating from the 1960s to 1970s. The 9-carat oval amethyst displays a highly desirable deep royal purple hue, indicating quality Brazilian or Uruguayan origin, free from significant zoning or inclusions visible in the photographs. The surrounding 1.5 carats of round-brilliant diamonds appear to be of high color (likely F-G range) and clarity (VS or better), consistent with Tiffany's rigorous stone selection standards. The 16.6-gram weight of the 18k gold mounting confirms a substantial, high-quality build. The gold's textured 'sunburst' finish is a signature of high-end Retro jewelry, adding significant artistic value beyond the raw materials. In the current secondary market, signed vintage pieces by heritage brands like Tiffany & Co. are commanding strong premiums. Comparable unsigned rings of this material weight and stone quality typically trade between $1,800 and $2,800; however, the Tiffany attribution significantly acts as a value multiplier. My valuation assumes the piece is fully authentic and retains its original manufacturer's hallmarks. A physical inspection is strictly required to verify the 'Tiffany & Co.' hallmark and assess the stones for any microscopic abrasions or treatments. Verification of provenance or original paperwork would push this valuation toward the higher end of the range. Without physical confirmation of the hallmark, this piece would be appraised closer to its intrinsic material value.