Pair of Vintage Tiffany & Co. 18Kt YG & Sterling Emerald Cufflinks. Marked "T&Co.". Weight - 9.4 grams. Tiffany & Co. has long been renowned for its luxury goods, especially jewelry, and has sought to market itself as an arbiter of taste and style. Tiffany's designs, manufactures, and sells jewelry, watches, and crystal glassware. It also sells other timepieces, sterling silverware, china, stationery, writing instruments, fragrances, leather goods, scarves, and ties.