As yet another eye-popping jewel by the Bronx-born designer known as "JAR of Paris" goes on the block next month, a few observations of what a designer can achieve by going against convention when it comes to gemstones.
Diamonds brought big prices at Christie’s New York jewelry sale today and the much publicized 32-carat Annenberg Diamond did not disappoint, selling for $7,698,500, more than twice the low estimate. At $240,000 per carat, the Annenberg sets the world record per-carat price for a colorless diamond, according to Christie’s. “For three and a half hours,...