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

Coated in platinum and 18K gold, Ultrahuman's new smart rings offer heart rate, sleep, and stress tracking in a luxurious ...

Often adorned with exquisite diamonds or other sparkling gemstones, engagement rings are known to be valuable pieces of ...