Among the pieces lighting up the Hong Kong Convention and Exhibition Centre on April 6 is a ring containing a 77.77-carat yellow diamond, the size of which is extremely rare for any diamond. Photos courtesy Sotheby’s.

At the Sotheby’s sale, Boucheron is represented by a gorgeous circa 1930s collar resplendent with approximately 40 carats of diamonds in addition to a 65.33-carat Colombian emerald centerpiece.

BY KAREN AANONSEN

Roughly $99 million worth of treasure is waiting to be scooped up by high bidders at Sotheby’s Hong Kong. The auction house’s April 6 Magnificent Jewels & Jadeite sale boasts 319 lots, with stunning selections from Boucheron, Graff, Van Cleef & Arpels, Chaumet, and more. Standout is Lot 1897: a 77.77-carat fancy vivid yellow diamond ring. Its awe-inspiring, cushion-shaped stone can be detached from the accompanying diamond-set shank and fit for wear as a pendant. Alone, the lot is expected to draw in up to $7.5 million.

—April 2015

Ten lots contain Van Cleef & Arpels offerings, including this lovely saltwater pearl and diamond brooch.