Black Diamonds

What are Black Diamonds, as seen in most jewelry?

Black diamonds are typically enhanced. Black diamonds are genuine diamonds treated with radiation to make their color appear black. Under normal lighting conditions the color enhanced black diamond looks black. However, it is actually very dark green. To observe the very dark green color, a fiber-optic light source can be placed near a thin edge of the diamond (such as the girdle or culet). This allows the light to illuminate some of the interior of the stone. The very dark green color that becomes visible is commonly seen in enhanced black diamonds. The very dark green color that is seen is never seen in natural diamonds. It is a result of radiation treatment.

Famous Black Diamonds

The Black Orloff

The Black Orloff (Orlov) cushion cut diamond (shown left) which still weighs in at a very respectable 67.50 carats. It is reported to have belonged to a nineteenth-century shrine near Pondicherry, India, and to have weighed 195 carats in the rough. Set in a diamond and platinum necklace, the Black Orloff has been widely exhibited. In 1969, the stone was sold for $300,000. It was resold in 1990 at Sothebys for $99,000. Also called the Eye of Brahma Diamond. The diamond is currently owned by Dennis Petimezas, a diamond dealer from Pennsylvania who bought the diamond for an unspecified sum in 2005.

"The Gruosi" Black Diamond

Upon creating amazing black diamond jewelry for his luxury jewelry house de Grisogono, chairman and founder Fawaz Gruosi enjoys a special place in diamond history: he is credited with popularizing the fascination with black diamonds in 1996 - a fascination that continues today.

He also had a rare opportunity - a rare opportunity even for a grand jeweler like himself: he got to name a diamond. Naming a diamond is something reserved only for original buyers of a rough diamond. The de Grisogono founder chose the name "The Gruosi" for the incredible 115.34-carat black diamond. In fact, Fawaz Gruosi has actually been involved in naming two diamonds - the other being the 312.24-carat "The Spirit of Grisogono," also a black diamond with the famous Swiss jeweler Mr. de Grisogono. These two black diamonds are the two largest black diamonds in the world.

sources : generousgems.com,blackdiamonds.co.uk,vialuxe.com

QVC, Smithsonian partnering on jewelry line

April 09, 2010 Washington--In what may seem like an unusual pairing, multichannel retailer QVC is teaming up with the Smithsonian Institute to create a line of fashion jewelry inspired by the museum's collection of iconic pieces.

In a news release issued Friday, the Washington, D.C.-based Smithsonian, the world's largest museum and research complex, announced it was entering into a licensing agreement with QVC to offer a jewelry collection based on objects in the National Gem and Mineral Collection, which is part of the National Museum of Natural History. The QVC-Smithsonian collection is expected to launch this fall.

The National Gem and Mineral Collection contains more than 375,000 individual specimens, and counts among its ranks world-famous pieces such as the blue Hope Diamond and the Marie Antoinette Earrings, as well as a research and mineral collection used by scientists around the world, the release states.

The line with QVC will include earrings, rings, bracelets, pins and brooches, as well as replicas of pieces in the museum's collection.

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De Beers' 'Millenium Blue' sells for $6 million

April 08, 2010

Hong Kong--A 5.16-carat fancy vivid blue diamond, once part of De Beers' Millennium Jewels Collection, sold for $6.4 million at Sotheby's Hong Kong on Wednesday, as diamonds continued to show strength in the auction market.

According to a news release from the auction house, Moussaieff of London emerged as the winning bidder for the pear-shaped diamond, which sold for well over its estimated sale price of $4.1 million to $5.1 million following "intense" bidding.

The sought-after stone was once one of the 11 blue diamonds in the Millennium Jewels Collection, a group of rare diamonds selected by Andrew Coxon, president of the De Beers Institute of Diamonds, to mark the turn of the millennium.

Wednesday's sale of the 5.16-carat millennium blue marks the first time one of these stones has been put up for sale since the diamonds were placed with private collectors in 2000.

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World's most famous 'unseen' diamond

By Jane O'Brien
BBC News, Washington

The room was dimly lit. Armed guards stood at both entrances and enormous ironclad doors were slid shut to seal the gallery.

Nobody spoke above a whisper as we waited for the first glimpse in half a century of one of the world's most extraordinary gems.

The Wittelsbach-Graff Diamond was last seen in public at the 1958 World Exhibition in Brussels. After that, it disappeared and its whereabouts remained a mystery until Laurence Graff, a billionaire diamond dealer, bought it at auction in 2008, appending his surname.

He and his son Francois were in the gallery of the Smithsonian's National Museum of Natural History in Washington DC as the blue stone, was brought up from a secret vault and finally revealed.

Flawless beauty

"I've been privileged over the years to own some of the world's most important and famous diamonds, but I would say that the Wittelsbach-Graff is the most valuable and the most beautiful," he said.

Sitting unadorned on a silken white cloth, it glittered grey and blue in the low light. Classed as "internally flawless" it is said to have exceptional colour and becomes intense orange when viewed under ultraviolet light.

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