Why Jewelry Is Outperforming the Rest of the Luxury World

The wealth gap in the U.S. is becoming so wide that even luxury brands are being divided into haves and have-nots.

Swiss luxury company Richemont CFR -0.21%decrease; red down pointing triangle has grown sales by more than 10% year-over-year in its Americas region for seven quarters in a row. Booming U.S. demand for its jewelry brands Cartier and Van Cleef & Arpels is fueling the rise.