Por un escritor de hombre misterioso
The mysterious gem, known as The Enigma, is believed to be the largest cut diamond on Earth.
The Enigma.': Giant 555.55-carat black diamond heads to auction
Enigma: rare 555-carat black diamond unveiled in Dubai thought to be billions of years old
Did Enigma, the mysterious black diamond, really come from space?
Mystery black diamond called 'The Enigma' goes up for auction
The Enigma: Mysterious black diamond up for auction - BBC News
Huge Black Diamond Sold for $4.3 Million–and No One Knows Where it Came From or How it Was Formed
The Enigma: Billion-year-old black diamond sold for £3.16m
Huge 'Enigma' diamond, possibly from space, to be sold at auction, Offbeat News
22-016 Adams Apple - Doug Carn – Kay-Dee Records