Program aims to educate young consumers about mined stones’ positive qualities.
Here are the 10 top-grossing stones at auction in 2022.
Yellow diamond falls short of estimate with final price of $12.4 million.
Diamond necklace leads auction with price of $5.9 million.
Stone was estimated to fetch up to $15 million in Geneva.
Sale price hits just above lower end of estimate.
Square emerald-cut Graff ring will be one of the lead items at November 8 Geneva Magnificent Jewels auction.
Golden Canary diamond expected to bring in more than $15 million in New York.
Sotheby’s will offer eight-piece De Beers set at global Magnificent Jewels auctions.
Lot becomes second-most valuable jewel ever sold at auction.
18.18-carat gem is largest pear-shaped stone to be offered at auction.