News Summary: Archduke Joseph Diamond for sale
GIRL'S BEST FRIEND: Christie's is auctioning the Archduke Joseph Diamond, a 76.02 carat diamond with perfect color and internally flawless clarity. The gem, which is expected to fetch more than $15 million on Tuesday, last sold in 1993 for $6.5 million.
BEHIND DOOR NO. 2: Sotheby's on Wednesday will auction what it calls an exceptionally rare, fancy deep blue briolette diamond of 10.48 carats expected to garner up to $4.5 million.
WHAT ELSE?: Also on the block is a conch pearl, enamel and diamond Cartier bracelet that formerly belonged to Queen Victoria Eugenia of Spain that's expected to sell for up to $1.4 million.