VIDEO: Christie's Previews Rare 75-Carat Briolette Diamond

Christie's Hong Kong asked model and actress Lynn Xiong to show off a beautiful 75-carat briolette-style diamond.  Expected to sell for between $8.5 to 12.5 million U.S. dollars, it's the largest pear-shaped diamond of its kind to appear at auction.

The briolette diamond and 290 other rare jewels will go under the hammer during Christie's Spring Auctions May 28.