18ct white gold, Tiffany & Co, diamond Smile pendant. The Tiffany T diamond pendant embodies the world's most universal gesture for happiness and the connections it creates. The pendant incorporates a diamond T front with .19ct of diamonds, and is fitted to an 18ct white gold trace chain with extender back and bolt ring closure. Chain length is 39 cm not including pendant front. Finished weight 3.20 grams. Tiffany & Co box supplied. Purchased 2017 and receipt enclosed.