Program aims to educate young consumers about mined stones’ positive qualities.
Eye bangle fetches nearly $1 million at Geneva Magnificent Jewels.
D-color, internally flawless stone carries estimate of up to $15 million at New York Magnificent Jewels.
Brand doubled its high-jewelry sales and saw strong demand for Lock bracelet collection.
Jewelry revenue up 25% year on year in third quarter.
Artcurial will offer emerald-cut, D-color stone at Monaco Luxury week in July.