Program aims to educate young consumers about mined stones’ positive qualities.
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.
Unmounted, 31.46- and 30-carat, D-flawless stones will go on sale in Hong Kong in October.
2.42-carat fancy-intense blue is top-seller at New York auction, bringing in $1.4 million.
Internally flawless stone to go under hammer in Hong Kong on October 5.
Hollywood double wore two of the pieces, gifted by Paul Newman, while trying to break the speed of sound on land.
Emerald-studded ring by Metagolden is a physical piece with a digital twin.