Tiffany & Co. Sparkler Prasiolite pendant necklace in sterling silver This exquisite Tiffany & Co. necklace features a captivating prasiolite (green amethyst) pendant set in sterling silver. The pendant measures 8mm x 8mm, and the chain is 16 inches long. In like-new condition, this piece is both simple and elegant. Authentic and originally purchased from the Tiffany & Co. store at Short Hills Mall in New Jersey