Rapaport Weekly Broadcast

Sotheby's Magnificent Jewels sale, which was held on April 20 in New York, generated $34,662,338, sold 84 percent by lot and featured a number of rare diamonds. which you can view in this video.

Highlights from the sale include a fancy vivid yellow necklace of 100.17 total carat weight that sold for $3,554,500; a beautiful, 7.67-carat, fancy intense pinkish orange diamond ring that sold for $3,106,500, a panther-themed wristwatch, an 8.66-carat ruby and more.

Preview the centerpieces from Christie's Jewels: The New York Sale held on April 22 -- the Catherine the Great emerald brooch and the Emperor Maximilian diamond ring -- and be sure to check diamonds.net on April 23 for the results of this auction.

Sotheby's Geneva to Auction 52.82-Ct.

Diamond Sotheby’s Geneva will hold its spring 2010 sale of Magnificent Jewels and Noble Jewels at the Beau-Rivage Hotel on May 11, 2010. At the heart of this sale will be an emerald-cut diamond weighing 52.82 carats, as well as a pear-shaped, fancy vivid blue diamond weighing 5.02 carats, both of which are set as rings.

The extremely rare 52.82-carat diamond was determined to be a type IIa, D, flawless with excellent polish and symmetry by the Gemological Institute of America (GIA). Sotheby's estimated that the ring would fetch over $7 million.

The 5.02-carat blue diamond is set in the form of a toi et moi ring (pictured), which was designed and created by Alexandre Reza. The blue stone is mounted alongside an exceptional 5.42-carat diamond with the same shape. Its estimated sale price ranges from $4 million to $7 million.

Source: Rapaport TradeWire Apr. 16, 2010