#48: Bleu Ballon Cartier Watch

Worn by: Kate Middleton

Owned since: 2012

Estimated value: $5,200*

Kate Middleton is known for her timeless elegance, but it’s not just the Queen who shares her jewelry. The Duchess has a special collection gifted by her loving husband, Prince William. Shortly after their first anniversary, William surprised Kate with a Cartier watch worth $5,200.

The 33 mm Blue Ballon is chic and sophisticated, perfectly reflecting Kate’s style. William even has a matching watch, adding a touch of couple coordination. While it’s not the cheapest piece in Kate’s jewelry stash, it’s certainly not the priciest either.