Program aims to educate young consumers about mined stones’ positive qualities.
11.28-carat, radiant-cut stone will be offered in stand-alone auction in Hong Kong on October 5.
Auction house hires Tom Burstein as department’s director, and Peggy Gottlieb as senior specialist.
Weak demand has left manufacturers with growing inventories of unsalable SI goods.
Jeni Campagna will also oversee business development in North America.
Dutch Diamond Technologies carved 4.04-carat piece from single synthetic stone.
A heated debate is brewing about the best approach to source-verification.
Emerald-cut, G-color, VS2-clarity stone is largest the organization has seen.
Collaboration will let the grading lab offer customers more info on diamonds’ origins.
Gem, likely from Brazil, is one of the largest the lab has graded.
Yellow diamond falls short of estimate with final price of $12.4 million.