A 7-Year Old Owns The World's Most Expensive Diamond

In case you were in the market, we have to let you know the world's most expensive diamond has been sold...to a seven-year old.

A billionaire in Hong Kong reportedly snapped up the AU $67 million stone for his daughter, naming it "The Blue Moon of Josephine" due to its incredible navy hue.

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The 12.03 carat stunner, which was found at a mine in South Africa, works out to be around AU $5.58 million per carat.

"This show-stopping blue diamond surely is a once-in-a-lifetime stone," David Bennett, Sotheby's worldwide chairman of jewelry, said in a statement.

If you're frothing at the mouth that a seven-year old now owns the diamond, rest assured she has another one to back it up in case she tires of it - a $40 million pink diamond aptly named Sweet Josephine.

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To put that into layman's terms, that's about 5000 times more expensive than the average engagement ring.

How will Josephine's future fiancee ever top that?!