Rare pink diamond going up for auction

May 8, 2012 4:45:28 PM PDT
A rare pink diamond is expected to fetch up to $12 million when it goes up for auction at the end of the month.

The big sparkler was put on display Tuesday at Christie's Auction House in Hong Kong. It weighs in at a little more than 12 carats.

Christie's says it is the first time a diamond of this color and cut has been sold at auction. A similar sized clear diamond could sell for nearly $3 million.