Lab also rolling out new comments clarifying impact of fluorescence.
Guidelines aim to enhance transparency in labeling and describing synthetics.
Jewel beats $150,000 top estimate, raking in $2.2 million in New York.
Anglo American moves forward with the sale of its 85% share in the diamond producer.
Stones above 10.80 carats and fancy-color goods dominated May sales.
Companies to transform rough into 20.26-carat polished to celebrate luxury retailer’s centenary.
Market lead stepping down after two years in the post, while Shefali Murdia joins as miner’s US general manager.
Fancy-orange-brown diamond pendant more than doubles high estimate to fetch $474,400.
The June issue highlights new collections, old cuts, and story-led marketing initiatives.
Market Comment: June 4, 2026