From designer Elsa Peretti by Tiffany & Co. is this charming smooth authentic ring, crafted from 18k yellow gold with a polished finish featuring a slanted wave shape bridge which blends with the shank shoulders and band. The top has a deep green jade stone which sits flush inside the mount. This ring is signed by the designer with the gold content. Brand: Tiffany & Co. Hallmark: Tiffany & Co. Elsa Peretti 750 Hong Kong Gemstone: Green Jade 19mm wide Material: 18k yellow gold Measurement: top: 0.88" long x 0.75" wide x 0.65" high Ring Size: 7 Weight: 22.2 grams