Mariah Carey’s new husband Nick Cannon has given his wife an $16 million diamond ring.

The rapper proposed to the singer with the custom made 14-carat pink diamond ring last month, with Carey seen showing off the ultimate bling at New York's trendy Waverly Inn.

A source tells The Mirror, “Nick has been besotted since he first met Mariah on a US TV show three years ago. Just before they got married, he got down on one knee again and gave her the pink diamond ring he'd had custom made. She was stunned and thrilled."

The pair were married in secret a week and a half ago.