Lot 421. An impressive fancy vivid yellow diamond ring. Estimate 1,500,000 — 2,000,000 USD. Lot Sold 1,874,500 USD . Photo Sotheby's

The cushion-shaped step-cut diamond of fancy vivid yellow color weighing 23.02 carats, flanked by modified half-moon-shaped diamonds, mounted in platinum and 18 karat gold, size 6¼. 

Note: Accompanied by GIA report no. 5131917457 stating that the diamond is Fancy Vivid Yellow, Natural Color, VVS1 clarity.