Red-hot diamond on block at Sotheby's Australia

source : nationaljewelernetwork.com
April 01, 2010

The 0.82-carat center stone of this ring will mark the first red diamond to be offered for public auction in Australia. The ring is estimated at as much as $921,556 and also features fancy blue diamonds and brilliant-cut colorless diamonds set in platinum.

Sydney, Australia--Sotheby's Australia's upcoming April 12 sale of antique and contemporary jewelry will be a significant one for the auction house. The event will mark the Australian branch's first standalone jewelry sale, with the highlight slated to be the first red diamond ever offered for public auction in Australia.

The 0.82-carat, fancy purplish-red Argyle diamond is set into a ring and is flanked by a pair of fancy blue diamonds in a round brilliant-cut diamond surround, all mounted in platinum. Its value is estimated at between 700,000 and 1 million Australian dollars (between about $645,065 and $921,556) and will be accompanied by a letter from Argyle Diamonds attesting to its rarity.

Sotheby's said in a media release that despite the notable discovery of the Argyle pink diamond deposits in Western Australia, less than a handful of red diamonds have been discovered, and connoisseurs have long considered red diamonds to be among the most precious and rare of diamonds.

The April 12 sale will offer even more superb examples of colored stones, including a double strand of graduated emerald beads accented with diamond-set rondelles (estimated between $9,676 and $11,519), a sapphire and diamond ring (estimated between $23,034 and $32,248) and an emerald and diamond ring (estimated between $64,497 and $82,907). ...

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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

By choice or not, jewelers fall off brand-wagon

source : nationaljewelernetwork.com
By Michelle Graff
April 15, 2010

Hearts on Fire says it is renewing its focus on bridal pieces, like this "Beloved" ring, featuring a 0.75-carat center stone and 0.37- to 0.47-carat side stones; setting retails for $2,650.

New York--In a month known for hearts and cupid's arrows, some of the industry's biggest brands weren't showing recession-battered retailers any love.

In February, both diamond company Hearts on Fire and the Richemont Group-owned Cartier acknowledged they were severing ties with under-performing retailers, and both cited essentially the same reason: They wanted to maximize their brand's potential by partnering only with those retailers who really know how to push their product.

Stories detailing these divorces blew up online at NationalJeweler.com, remaining on the site's top-viewed list for weeks. But was the frenzy whipped up by the jewelers directly impacted or by the love-hate relationship jewelers often harbor when it comes to their favorite brands? Longtime retailers and industry observers suggest the latter. ...

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In Pictures: America's Most Popular Diamond Cuts

Round

With one out of every three diamonds sold in the U.S. being a classic round brilliant diamond, this cut is far and away the most popular.

Scarlett Johansson and singer Fergie both sport classic rounds.
Princess

The princess diamond was created in 1980 but has catapulted into massive popularity, making it the second-most popular diamond cut in the U.S. Diamond analyst Kenneth Gassman estimates that princess cut diamonds make up approximately 13% to 20% of diamond sales.

Freddie Prinze Jr. proposed to Sarah Michelle Gellar with a princess cut.

Emerald

The third-most popular cut has long clear "step cuts," which emphasize the diamond's clarity and gives it a more subtle appearance than the "brilliant" cuts of most diamonds.

Nick Cannon proposed to Mariah Carey with a reported $2.5 million emerald-cut diamond.

Pear Shape

The pear shape, the fifth-most popular diamond, is also called a "tear drop" for its single point and rounded end.

The most famous pear-shaped diamond has to be the 69-carat pear-shaped diamond given to Elizabeth Taylor by her fifth and sixth husband Richard Burton. Taylor wore the Taylor-Burton diamond in a necklace.


Asscher

The Asscher cut has been around for a century but soared in popularity, especially in Hollywood, after being featured in an episode of Sex and the City in which nice-guy Aidan proposed to protagonist Carrie Bradshaw.

Kate Hudson and Elizabeth Hurley were both given Asscher cuts by their soon-to-be husbands.

Source: Kenneth Gassman, The Diamond Source of Virginia, Blue Nile.
source : http://forbeslife.nl/2009/04/17/engagement-weddings-diamonds-forbes-woman-style-retail_slide.html?partner=contextstory