57 - Lady's Approx. 9.0 Carat Round Brilliant Cut Diamond and 18 Karat White Gold Riviera Necklace. Diamonds G-H Color, VS Clarity. Signed 18K. Very Good Condition. Measures 16 Inches Long. Approx. Weight: 15.0 Pennyweights. Shipping $30.00 (estimate $9,000-$12,000)