Program aims to educate young consumers about mined stones’ positive qualities.
Pair of earrings rakes in $385,500 in Geneva, smashing its $56,900 presale price.
Around 20 lots will feature at the Joaillerie Paris online sale.
Ocean Dream fetches highest amount ever for a stone of its hue.
Piece has an upper price of $192,000 at May 19 Jewels Online sale in Geneva.
Piece has $26 million high estimate at May 26 Magnificent Jewels Hong Kong.
Stones will lead June 9 Magnificent Jewels in New York.
One of two featured Art Deco necklaces appeared in 1974 film adaptation of The Great Gatsby.
Ring carries a $700,000 high estimate at March 19 Jewels Online sale.
Christie’s saw “surging” demand for emeralds, rubies, sapphires and Paraiba tourmalines in 2025.
What generated the greatest interest? The good, the bad and the synthetics.