The public has had a long fascination with celebrity diamond engagement rings, and who wouldn’t with engagement rings that hit the $1 million mark. The fascination lies in the true Hollywood love story and engagements that are a dream come true. Here are just a few of the most famous celebrity diamond engagement rings that caused worldwide attention.

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Katherine Heigl

The Grey’s Anatomy star has a unique pear-shaped stone surrounded by pave diamonds.

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Jennifer Hudson

The Oscar-nominated singer/actress is known for her large voice, but she is also known for her large engagement ring. Her Neil Lane ring has a 5 carat center stone.

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Princess Diana

Lady Diana revolutionized the sapphire engagement ring nearly a decade before it became trendy.

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Jennifer Aniston

Brad Pitt teamed up with Damiani Jewelry to create this unique, swirly design.

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Courtney Cox

This ring, which has two center stones instead of one, has a unique “figure 8″ design.

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Carmen Electra

The former model caused a little bit of jewelry controversy with this unconventional black diamond engagement ring.

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Paris Hilton

Although her engagement to Paris Latsis did not last, she did get to walk away with this huge 15 carat rock.

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Mariah Carey

Nick Cannon proposed to the singer with this unique pink gold engagement ring. The ring is a unique design that only Mariah owns.

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Jennifer Lopez

Her $6 million 6.1 carat rock given to her by then fiance Ben Affleck revolutionized pink diamond engagement rings.

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Kara Dioguardi

The American Idol judge went with a champagne citrone stone instead of a diamond.