Program aims to educate young consumers about mined stones’ positive qualities.
6.79-carat Hemmerle ring sells for $328,890, well over upper price tag.
Group includes the largest collection of René Boivin pieces ever to come to auction.
Jean-Marc Mansvelt will go from Chaumet to Berluti, while Charles Leung heads to Chaumet from Fred.
Signed jewels and period pieces dominate London auction.
Over two centuries of the Parisian jewelry house’s archival drawings come to life in a book on its nature-inspired creations.
Division’s sales up 11% in first half of 2023.
Retailer names Rosie Huntington-Whiteley as newest global house ambassador.
126.76-carat stone appeared without reserve at New York Magnificent Jewels auction.
Cushion-cut stone carries high estimate of nearly $435,000.