What may be one of the 20 largest diamonds ever found was recently discovered in the Cullian mine in South Africa, according to . The 507.55 carat gem weighs just over 100 grams, and is estimated to be worth close to $20 million. The Cullian mine also produced the worlds largest diamond to date; the Cullian, which was 3,106 carats.
To get a glimpse of the multimillion dollar rock, go to .
–Dave Costello