Program aims to educate young consumers about mined stones’ positive qualities.
D-color, internally flawless stone carries estimate of up to $15 million at New York Magnificent Jewels.
Christie’s garners $202.2 million from three-part auction.
There are several developments that are creating positive energy around jewelry.
Collector Heidi Horten’s husband made his fortune during Third Reich.
May auction will feature 25 pieces by the designer.
Despite a poor showing at the fall sales, large colored diamonds and historical jewels look like they will gain steam this spring.
Late Austrian billionaire’s jewelry assortment set to be most valuable in auction history.
Collection includes Van Cleef & Arpels ruby and diamond bracelet that Marlene Dietrich wore in an Alfred Hitchcock film.
Paris-based executive spent 17 years at L’Oréal.
Signed jewels and white diamonds are some of the safer bets for collectors, insiders say.