10/15/2010 04:27 pm ET Updated May 25, 2011

World's Most Expensive Barbie, Rare Blue Diamond Ready For Auction (VIDEO)

At Christie's New York, the world's most expensive Barbie is ready for auction. She's valued at between $300,000 and $500,000 and 100% of the proceeds go to breast cancer research.

Another highlight of the $40 million diamond sale is The BVLGARI Blue, the largest triangular-shaped Fancy Vivid Blue diamond ever offered at auction, which is expected to fetch in excess of $12 million dollars.

The items are part of Christie's Jewels: The New York Sale, which is expected to achieve in excess of $ 40 million in total.

All profits from the sale will benefit the Breast Cancer Research Foundation.

The Huffington Post's Samira Nanda caught up with the Barbie and its creator days before the auction.