Program aims to educate young consumers about mined stones’ positive qualities.
Nicky Hilton Rothschild and Eddie Levian are among more than 1,000 who signed open letter against rising racism and violence.
Agreement will provide Bangkok-based China Stone with consistent stream of goods for at least three years.
Timepiece by renowned horologists George Daniels and Roger Smith leads Sotheby’s Geneva auction.
The event will allow US diamond dealers to show support while promoting business.
WD Advanced Materials will create synthetics for technical applications.
Auction house expects ‘Love Stone’ to fetch up to $4.1 million.
Former Unilever exec will join company December 1, replacing Marc Jacheet.
November sale also features jewelry from Fred, Bulgari, and other top houses.
Collection includes pinks, reds and yellows from Argyle and Diavik mines.
New Jersey Rago/Wright Fall Jewels sale to feature 300 lots.