A crucial change to GIA grading reports could restore confidence among the trade and consumers.
Category: Auction
Two lead items expected to fetch up to $17 million combined.
Fancy-pink diamond estimated at up to $2 million, while blue has $1.8 million upper price.
Piece carries an estimate of up to $268,000.
A pair of pearl and diamond earrings fetches more than 23 times expected price.
Miner sells 1.5 million carats, accounting for 94% of lots.
Fancy-vivid-pink ring will be among top pieces at May 22 sale.
Emerald and diamond earrings sell for five times high estimate.
Blue-diamond ring is top lot, smashing high estimate to bring in $12.7 million.
Diamond sells to American private collector, becoming most valuable jewel at auction this year.
53.14-carat yellow diamond, set to fetch up to $3.5 million, was among items without a buyer.