Archduke Joseph Diamond fetches record $21.5M in Geneva, where big gems find wealthy buyers

  • by: JOHN HEILPRIN , Associated Press
  • Updated: November 13, 2012 - 6:53 PM

GENEVA - Christie's auctioned off the Archduke Joseph Diamond for nearly $21.5 million Tuesday night, a world auction record price per carat for a colorless diamond.

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