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This huge black diamond just sold for $4.3 million. No one knows where it came from.

4.6 (290) · € 37.99 · En stock

Geologists still can't say for sure whether the enormous stone called the Enigma crystallized in Earth’s mantle or fell from outer space.

The Enigma: Mysterious black diamond up for auction - BBC News

Black 555.55-carat diamond dubbed 'The Enigma' sells for £3.1 million at auction

This $30 Million White Diamond Is The Largest To Ever Appear At Auction

Diamond - Wikipedia

The Enigma: 555.55 Carat Fancy Black Diamond

Minerals and Gems National Geographic

Enigma Black Diamond Sells For $4.3 Million At Auction

Billion-Year-Old Black Diamond Sells for $4.3 Million - WSJ

Huge Black Diamond Sold for $4.3 Million–and No One Knows Where it Came From or How it Was Formed

Finders Keepers! A Lucky Retiree Visited an Arkansas National Park and Discovered a 4.38-Carat, Jellybean-Sized Diamond