February 16, 2016 9:54 AM EST

Good luck getting this rock on an engagement ring.

A “spectacular” 404.2-carat diamond — which is almost three inches long — has been found in Angola. It is the 27th biggest ever discovered, according to the Australia-based Lucapa Diamond Company.

It has been analyzed as a rare Type IIa, a category that makes up less than 1 percent of the world’s diamonds and means it is virtually flawless.

The diamond is the largest ever found in Angola, at almost twice the weight of the 217.4-carat “Angolan Star” recovered in 2007.

Lucapa did not give any indication of the value of the diamond, which was…

Read the rest of this story from our partners at NBC News

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