This huge black diamond just sold for £3.1 million. No one knows where it came from.

A 555-Carat Black Diamond Is Going Up for Auction. Did It Really Come From Space?

A 555.55-carat black diamond believed to come from space is going on sale

Black diamond, largest ever cut, sells for £3.2 million

The Enigma: 555.55 Carat Fancy Black Diamond

This huge black diamond just sold for £3.1 million. No one knows where it came from.

This huge black diamond just sold for £3.1 million. No one knows where it came from.

Here's What A Million-Dollar Watch Looks Like At Auction

Billion-Year-Old Black Diamond 'The Enigma' Sells For More Than £3 Million

Diamond - Wikipedia

Billion-Year-Old Black Diamond 'The Enigma' Sells For More Than £3 Million

Black diamond, largest ever cut, sells for £3.2 million

55-sided, 555-carat 'Enigma' black diamond (potentially from space) goes on sale