About Brown Diamonds
Many people describe brown or brownish diamonds as "champagne" diamonds, presumably because it sounds more exotic, expensive and desirable. Certainly brown is not a "high preference" colour, i.e.
Brown Diamond - Although not as frequently encountered as a yellow body color, brown tints in diamonds are next to yellow in occurrence. These stones are also known as top light browns and "cognacs" or "coffees".
Brown Diamond
A diamond with attractive or vivid brown color is rare and considered as fancy colored stone.
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Brown Diamonds
Brown Diamonds have become very popular in the last 20 years or so. With effective marketing and wonderful pieces of Jewelry being designed, Brown Diamonds have found their way into homes and our hearts.
BROWN DIAMOND
If you want to speculate on a fancy diamond at affordable prices, browns are a natural choice. The connoisseurship of brown diamonds may be in its infancy. In essence, these are the only colored diamond bargains left.
The brown diamonds shown below are examples of annealed stones. The second photo shows an irradiated blue stone before and after annealing.
Brown diamonds, which are generally less appreciated than other fancy colors and therefor, sold at a greater discount, have become more commonplace as Australian colored diamonds have gained in popularity.
Fancy Yellow Diamonds (Canary Yellow) ...
Brown Diamond
Within normal diamond creation, the color will change to brown when the diamond undergoes incredible pressure.
Platinum Brown Diamond Seedling Earrings
Fancy Intense Yellow Emerald Diamond
Orange Yellow Diamond Centered Flower Wrap Ring ...
Natural brownish or brown diamonds show a single clear line at 504 nm
accompanied by a weaker double line at 498 and 537 nm.
Winter 1967, Brown diamonds and their inclusions, p. 249, 2pp.
Summer 1968, Radium-treated diamonds, p. 304, 2pp.
Fall 1969, Spectrum of a natural gray diamond, p. 89, 2pp.
59 carats, then the largest faceted brown diamond in the world. The diamond was found to have a greater degree of brilliance than is usually seen in a gem of such a strong color: the combination of color and brilliance led to Joseph Baumgold naming ...
In the year 1985, a brown diamond was found which was large in size in the Premier mine located in South Africa. This precious stone weighed around five hundred and forty six carats.
Colorless diamonds for example, are valued more highly than yellow or brown diamonds, simply because colorless diamonds are more rare.
Brown Attractive or vivid brown diamonds are rare, and classed as fancy coloured, slightly brownish stones (off-white) are slightly less common than slightly yellow, and offer reasonably priced alternatives to colourless stones.
2. 19TH CENTURY FANCY LIGHT BROWN DIAMOND AND DIAMOND NECKLACE sold for 1.34 Million USD, on Apr 2008 by Sotheby auction.
3. 19.86 Carat Diamond Ring sold for 1.046 Million USD on Dec 09 - '08, by Sotheby auction.
Yellow metal makes slightly yellow or brown diamonds appear more colorless, while darker yellows and browns look darker and richer in yellow gold setting. Warmer colored diamonds (K-Z) are particularly desirable when set in yellow gold.
Champagne Diamond: A pinkish brown diamond mostly mined in Australia. The color comes from their low nitrogen content.
Champlevé: Method of applying enamel to metal in which engraved grooves are filled with enamel and then polished.
champagne diamond
A champagne diamond is a pinkish brown diamond (having a color of C2-C3). Most champagne diamonds are mined in Western Australia (in the Argyle Mine). The color is produced by a their low nitrogen content.
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Fancy Coloured Diamonds: Naturally coloured yellow and brown diamonds that exhibit colour beyond the Z range, or that exhibit any other colour face up.
Feather: A collective term for diamond cleavages and fractures.
Most recently (3/99), Pegasus Overseas Limited (POL), a subsidiary of Lazare Kaplan International (LKI), has begun to sell diamonds enhanced by a proprietary process that converts certain brown to pale brown diamonds to colorless, ...
1 1/3ct TGW Amethyst and Brown Diamond Ring in Yellow Gold
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top top light brown (TTLB) A very, very light brown diamond that is the approximate equivalent of I to J color on the GIA scale.
topaz A gemstone representing #8 on the Mohs Scale of hardness.
It is useless to deny that by the unaided eye one might be deceived into thinking that a fine brown zircon was a brown diamond.
As with most other gems, yellow/brown diamonds are the least valuable of the fancies though champagne diamonds are particularly striking and lovely.
The color of the diamond ranges from D-X for white and yellow diamonds but one can also find green, pink, red, blue and brown diamonds that are usually treated to bring the variety.
Cognac diamonds - Cognac diamonds have a tint of brownish body color and the term Cognac is an alternative way of describing brown diamonds.
Cognac Diamonds
Color ...
Similarly, the HPHT technique has also been applied to type Ia brown diamonds by several companies, yielding fancy yellowish green and greenish yellow colors. Pink and blue colors have also been produced by the same technique.
[6] The Gemological Institute of America (GIA) classifies low saturation yellow and brown diamonds as diamonds in the normal color range, and applies a grading scale from 'D' (colorless) to 'Z' (light yellow).
Needless to say, stones treated in any way are worth far less and this is something any careful purchaser should remember. Treated brown diamonds should sell for about 50% to 75% less than a naturally colorless stone, ...
For most yellow and brown diamonds their value generally decreases as their grade moves down the scale toward "Z". But once a diamond passes the "Z" grade it becomes more valuable and more expensive.
 See also: Diamond, Stone, Jewel, Carat, Gemstone
  
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