20 'The Enigma': Sothebys To Auction Off Massive 555.55-Carat Black Diamond From Space ~ carbonado diamonds, believed to be formed through extraterrestrial origins, with meteorites colliding with the Earth and either forming chemical vapor disposition or coming from meteorites themselves (www.zerohedge.com) posted 2 years ago by xleb2 2 years ago by xleb2 +21 / -1 11 comments share 11 comments share save hide report block hide replies
Star sapphires exist. Picture
Unless you mean you want an absurd-sized one. The impurities that make the "star" of a star sapphire would probably cause it to crumble at any significant size.
Looks like a goddamn Pokemon evolution stone.