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 ...
Jewels, birthstones, gemstones—so many names for the glitzy, glamorous stones so many of us love to wear each and every day. This got us thinking: Is there a difference between jewels and gems? To ...