A rare square 37-carat emerald owned by the Aga Khan fetched nearly $9 million at auction in Geneva on Tuesday, making it the world's most expensive green stone. Sold by Christie's, the Cartier ...
Weighing 836 pounds (about 380 kilograms), the world's largest emerald gemstone has opened the way back to his hometown of Brazil after 23 years of excavation. According to the Washington Post (WP ...
The Brazilian authorities say the Bahia Emerald, as the stone is known, is a national treasure and was illegally smuggled from Brazil into the United States. The gem, one of the largest emeralds ...