The pear-shaped, 34.5 carat colorless diamond is considered one of the most ancient diamonds in the world and it has an estimated worth $4 million, AP reports. The sparkling jewel will be auctioned by Sotheby's in Geneva on May 14 but will be in public ...

... demand for top colored and colorless diamonds with exceptional provenance, including the new auction record of $266000 per carat for a colorless diamond, achieved last December in New York for the legendary Elizabeth Taylor Diamond of 33.19 carats.

The jewelry collection to be auctioned reportedly includes signed Art Deco jewels by Cartier, Dreicer & Co. and Tiffany & Co., including a rare 9-carat pink diamond ring and a 20-carat colorless diamond ring. The complete collection of 17 pieces is ...

Another highlight is an exceptional colorless diamond ring of 19.86 carats, by Cartier in its original box from the 1920s. It is estimated to fetch $2-3 million. There are a number of bracelets in the collection, including two Art Deco wristlets by ...

Huguette Clark's collection also features an exceptional colorless diamond ring of 19.86 carats, by Cartier (estimate: $2 ?3 million). Certified by the Gemological Institute of America (GIA) as D color ? the best color grade possible in a white diamond ...

A Florida-based company says it has created high-quality, colorless, lab-created diamonds. Diamond industry representatives are debating whether this is a ?game changer? in how colorless diamonds are sourced and priced. Gemesis Diamond Company is ...

Huguette Clark's collection also features an exceptional colorless diamond ring of 19.86 carats, by Cartier (pictured at right; estimate: $2 ?3 million). Certified by the Gemological Institute of America (GIA) as D color ? the best color grade possible ...

LAKEWOOD RANCH, Fla., Mar 13, 2012 (BUSINESS WIRE) -- The whispers of gem-quality lab-created diamonds started in the mid-to-late 90s, and then in 2003, the industry started buzzing at the prospect of colorless diamonds that could potentially rival ...

The largest colorless diamond listed is 1.19 cts. Most of the clarity grades are VS and above, and the colors mostly fall in the GHI range. The price differential between lab-grown and natural seems substantial, but not huge; Gemesis lists a 1.04 ct, ...

By Rob Bates, Senior Editor It has certainly been a while since November 2010, when Gemesis first promised to sell lab-grown colorless diamonds over the Internet. But the site for the business now known as Gemesis Diamond Company finally went live ...