From Gwen Stefani's $500,000 sparkler to Mariah Carey's 35-carat emerald-cut diamond, here are the most expensive celebrity ...

The singer and actress made it clear that the ring was a gift and that she doesn't have any intention of returning it.

Zendaya is keeping mum — but her ring tells a story, jewelry experts say.

Before you reach for your credit card, make sure you're aware of all the ways you can save on diamond jewelry purchases.

Zendaya was a picture of old Hollywood glamour at the Golden Globe Awards on Sunday evening, arriving in an elegant Louis ...