Interstellar Enigma diamond sold for $4.5M in crypto By Cointelegraph

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A 555-carat diamond with mysterious origins estimated to be billion years old has been sold for $4.5 million in cryptocurrency at a Sotheby’s auction.

The diamond has baffled geologists over its origin, where it’s still not clear whether it came from outer space or was crystallized in the earth’s mantle. The diamond is characterized by its opaque black appearance with full of visible holes.

Enigma Auction Page Source: Sotheby