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 has ample reason to be hypnotized by her East-West set, emerald-cut engagement ring. A bit of sleuthing revealed it ...

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