11 novembre 2015
'The Blue Moon'. An exceptional Fancy Vivid Blue diamond ring
Lot 513. 'The Blue Moon'. An exceptional 12.03 carats Fancy Vivid Blue diamond ring. Estimate 34,200,000 — 53,700,000 CHF. Lot sold 48,634,000 CHF. WORLD AUCTION RECORD PRICE-PER-CARAT FOR A DIAMOND OR GEMSTONE. Photo Sotheby's 2015 The cushion-shaped...