A 7.03-carat fancy deep blue diamond mounted on a platinum ring by London high jewelry house, Moussaieff, is the top lot at Christie’s Geneva Magnificent Jewels sale. The blue rectangular-cut gem with VVS2 clarity has an estimate of $10 million – $14 million.
It is among a number of colored and colorless diamonds available at the November 12 sale. Other top lots in this category include a 46.93-carat D color, internally flawless diamond with a half-moon modified brilliant-cut (estimate $3.8 million – $4.5 million); and a 5.23-carat fancy intense blue cut-cornered rectangular modified brilliant-cut diamond (estimate: $3.5 million – $4.5 million).