Lot 25. Pair of 7.06 and 7.05 carats, VS1 and VVS1 clarity Fancy intense yellow diamond, yellow diamond and diamond pendent 'cubic box' earrings. Estimate HK$2,500,000 - 3,500,000 (US$320,000 - 450,000) & Lot 26. 9.49 carats, Internally Flawless clarity Fancy intense yellow diamond and pink diamond ring. Estimate HK$1,800,000 - 2,800,000 (US$230,000 - 360,000). Courtesy Tiancheng International.

Lot 25. Pair of 7.06 and 7.05 carats, VS1 and VVS1 clarity Fancy intense yellow diamond, yellow diamond and diamond pendent 'cubic box' earrings. Estimate HK$2,500,000 - 3,500,000 (US$320,000 - 450,000). Courtesy Tiancheng International. 

Each modelled as a box, suspending a cushion-shaped fancy intense yellow diamond weighing 7.06 and 7.05 carats respectively, decorated with brilliant-cut diamonds extending to the surmount, highlighted by brilliant-cut yellow diamonds, the yellow diamonds and diamonds altogether weighing approximately 1.45 carats, mounted in 18 karat white and yellow gold.