Venetian Princess necklace by Roberto Coin. Polished 18-karat white gold hardware. Black and white diamond flower pendant. Two chains with integrated flower station. 3. 90 total combined diamond carat weight. 3. 00 total black diamond carat weight. 0. 90 total white diamond carat weight. Approx. 30"L chain; 2"L pendant. Signature hidden synthetic ruby. Lobster clasp. Made in Italy.