MARIAH CAREY has sold the ­35-carat diamond engagement ring James Packer gave her two years ago.

MARIAH CAREY has sold the ­35-carat diamond engagement ring James Packer gave her two years ago.

Take a tour of 'Hero' singer Mariah Carey's $13.5m emerald-cut diamond engagement ring collection courtesy of ex-fiances Tommy Mottola, Nick Cannon, and James Packer ...

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

MARIAH Carey has stepped out wearing her 35 carat diamond engagement ring from her ex-fiance James Packer — even though they split up a year ago.

Mariah Carey's romantic history. Take a look back at every relationship, ... after he popped the question with a massive 35-carat diamond ring that was worth an estimated $10 million.

Mariah Carey performs at the 82nd Annual Rockefeller Center Christmas tree lighting ceremony in New York, Dec. 3, 2014. Charles Sykes/Invision/AP Mariah Carey has spoken, and it is Christmas time.

MARIAH CAREY has sold the ­35-carat diamond engagement ring James Packer gave her two years ago.

MARIAH CAREY has sold the ­35-carat diamond engagement ring James Packer gave her two years ago.

MARIAH Carey has stepped out wearing her 35 carat diamond engagement ring from her ex-fiance James Packer — even though they split up a year ago.