|
|
Hot Party gift gifts 3LED lights Red Rose with Stand Glass Crystal Figurine $14.49 brand new... |

The Gemological Institute of America (GIA), the American Gem Society (AGS), and the International Gemological Institute (IGI) are the three most widely known and respected diamond grading laboratories in the world. Each of the grading laboratories have developed a very similar nomenclature for identifying the 4 C's of diamonds.
D to Z
Color grading scales used by the internationally recognized laboratories (GIA & IGI for example), ranges from totally colorless (D) to pale yellow or brown color (Z). Brown diamonds darker than K color are usually described using their letter grade, and a descriptive phrase, for example M Faint Brown. Diamonds with more depth of color than Z color fall into the fancy color diamond range.
The coloration of diamonds can be caused by several factors. Impurities trapped in the diamond during its formation, the crystal lattice structure of the diamond, and the exposure to radiation can all lead to the wide verity of colors available in diamonds.
Yellow Diamonds
Yellow diamonds are colored because of the impurities that are trapped inside diamonds when they are created. If a few of the millions of carbon atoms have been replaced by nitrogen atoms, then structure of the diamond will not be significantly altered but the clarity will be changed. The amount of color displayed is dependent on the amount of nitrogen involved.
When we see color it is because the object we are looking at reflected a specific wavelength of the light spectrum. A good example of this is a yellow flower. The flower absorbs all of the light except the yellow light, which is reflected by the yellow flower.
Blue Heart Diamond
In the case of a blue colored diamond some of the nitrogen has been replaced by Boron. Boron will reflect the blue wavelength of the light spectrum. The higher the concentration of boron the more color will be showed. At a level of one or a few boron atoms for every million-carbon atom, an attractive blue color results.
Graff Pink Supreme Diamond
The pink diamonds comes in shades ranging from a pastel rose, such as the Pink Orchid to intense purple-reds of the Moussaieff Red, and the price is determined by the intensity of the color. Pink diamonds have sold for up to $1,000,000 a carat. Unlike the Type I diamonds that derived their color from impurities embedded in the diamond, Pink diamonds are considered a Type II and get their color from a process known as Plastic Deformation.
Type II diamonds have very few if any nitrogen impurities in them. They get their coloration due to structural anomalies caused by Plastic Deformation during the crystal growth. The intense pressure changes the lattice structure of diamonds and has led to the formation of Pink, and Red colored diamonds.
Green Diamond
A natural diamond coming into contact with a radioactive source at some point during its lifetime causes some diamonds to develop a green coloration. The time required may be as much as a million years or longer. Green diamonds of this nature are very unique.
The most common form of irradiation diamonds comes from alpha particles found in uranium compounds or from percolating groundwater. Green spots on the surface of the diamonds or a thin green film may develop on the skin of the diamond after long exposure to these particles. Many times this green coloration will be removed during the cutting or faceting process.
Bombardment by beta and gamma rays will color the diamond to a greater depth and in some rare case turn the entire stone green. Heating to temperature to just below 600 degrees Celsius can sometimes also cause a diamond to develop a green ting. Higher temperature may turn the stone to a less desirable yellow or brown color.
Black Diamond
Black diamonds are found only in Brazil and the Central African Republic. Approximately 600 tons of conventional diamonds have been mined, traded, polished since 1900. But not a single black diamond has been discovered in the world's mining fields. The geological settings where diamonds are found or mined are virtually identical with the one exception, the Black Diamond.
Black diamonds have been found to contain trace elements of nitrogen and hydrogen. The study published in 2006 analyzed the hydrogen in black diamond samples using infrared-detection instruments and found that the quantity indicated that the mineral formed in a supernova explosion prior to the formation of the Solar System. These diamonds were formed by carbon-rich cosmic dust in an environment near carbon stars. The diamonds were incorporated into solid bodies that subsequently fell to Earth as meteorites.
About the Author:
David Cowley has created numerous articles on Diamonds. He has also created a Web Site dedicated to Diamonds. Visit Diamonds
Article Source: ArticlesBase.com - Why are Some Diamonds Colored
|
|
Acrylic Diamond Alloy Metal Flower Pendant Necklace $0.01 |
|
|
Estate Diamond Pearl 14K Gold Clip Flower Earrings NR $133.50 |
|
|
Antique Diamond Garnet Pearl Gold Flower Pendant NR $735.00 |
|
|
Acrylic Diamond Alloy Metal Flower Pendant Necklace $0.01 |
|
|
DIAMOND FLOWER 14K WHITE & YELLOW GOLD RING $110.00 |
|
|
18K GOLD FANCY 1.60CTW DIAMOND/SAPPHIRE FLOWER EARRINGS $150.00 |
|
|
NATURAL RUBY & DIAMOND FLOWER NECKLACE: 14K. WHITE GOLD $124.99 |
|
|
Estate 2.00ct Diamond Tanzanite Gold Flower Ring NR $74.00 |
|
|
TRIFARI Lavender Flowers Black Diamond-like Pin Brooch $87.00 |
|
|
UNIQUE Vintage Diamond Flower Pocket Watch Necklace HB $0.01 |
|
|
NEW Emerald Ruby Sapphire & Diamond Flower Ring 8 $79.95 |
|
|
Antique Art Deco 18k Diamonds Pearls Flower Brooch $394.00 |
|
|
Fine! Blue Flower Turquoise Diamond Beads 15"(4501) $6.99 |
|
|
AUTHENTIC PANDORA DIAMOND RING FLOWER BOUQUET 19245D $125.99 |
|
|
14K Rose Gold Diamond Fashion Flower Ring by MORRIS & D $295.00 |
|
|
ELEGANT 3/4ct FLOWER DIAMOND 18K GOLD EARRING $345.00 |
|
|
14K WG Diamond Fashion Flower Ring by MORRIS & DAVID $295.00 |
|
|
SAPPHIRE & DIAMOND 18K WHITE GOLD FLOWER PIN $495.00 |
|
|
ART NOUVEAU Vintage DIAMOND ENAMEL FLOWER 14K GOLD PIN $135.00 |
|
|
Genuine Aquamarine & Diamond Flower Necklace Pendant $8.99 |
|
|
Acrylic Diamond Alloy Metal Flower Pendant Necklace $0.01 |
|
|
Vintage Estate Diamond Flower 14k Gold Engagement Ring $695.00 |
|
|
ESTATE RUBY SAPPHIRE EMERALD DIAMOND 18K FLOWER PIN $3,875.00 |
|
|
Laura Ramsey Diamond Flower Button Earrings .50cttw 14k $499.95 |
|
|
5 AB Diamond Faceted Crystal Glass Flower Bracelet A112 $12.99 |
|
|
CHAMPAGNE Diamond Flower Shape PENDANT 18K Yellow Gold $549.00 |
|
|
Exquisite Diamond flower pocket watch Necklace 125o $0.99 |
|
|
Blue n White Diamond Flower Earrings in 14K White Gold $229.00 |
|
|
Estate Pearl Pave Diamond Flowers Gold Earrings Jewelry $479.00 |
|
|
CLASSY DIAMOND WEDDING BAND IN FLOWER DESIGN 18K GOLD $332.00 |
|
|
1.00 CT Natural Diamond Sterling Silver Flower Pendant $1,040.00 |
|
|
Cute blue CZ diamond CZ diamond flower stud earrings $9.99 |
|
|
VINTAGE ART NOUVEAU FLOWER PENDANT DIAMOND OLD NECKLACE $750.00 |
|
|
ART DECO FLOWER VINTAGE DIAMOND ANTIQUE ESTATE OLD RING $375.00 |
|
|
RARE ART NOUVEAOU 14K DIAMOND BRACELET-FLOWERS PATTERN $699.00 |
|
|
1/2 CT Diamond Sterling Silver Flower Journey Pendant $299.99 |
|
|
NEW Silver Flower Ladies Perfect Wrist Watch Diamond + $0.99 |
|
|
Antique Victorian Diamond Flower Gold Pendant Vintage $299.00 |
|
|
14K Flower & Lady SapphireTsavorite Diamond Ring Unique $980.00 |
|
|
Estate Diamond Topaz Flower Gold Pendant Fine Jewelry $495.00 |
|
|
14KG Tsavorite Pink Sapphire Diamond Flower Ring Band $899.00 |
|
|
Fine Estate 14k Gold Diamond Flower Ring Jewelry $411.75 |
|
|
NEW EMERALD DIAMOND 18K GOLD FLOWER FRENCH BACK EARRING $1,295.00 |
|
|
WONDERFUL 3.05ct Diamond Natural Flower Ring 18K Gold $9,449.00 |
|
|
LADIES 10K WHITE GOLD DIAMOND FLOWER DANGLE EARRINGS $289.99 |
|
|
LADIES 10K WHITE GOLD DIAMOND FLOWER DANGLE EARRINGS $209.99 |
|
|
18K yellow gold plated cz diamond flower earrings $14.99 |
|
|
18K white gold plated cz diamond flower earrings $14.99 |
|
|
Tanzanite Diamond Ring 14kt Yellow Gold Flower Design $295.00 |
|
|
Affinity Diamond Champagne Sterling Flower Enhancer $167.50 |
|
|
ESTATE RUBY & DIAMONDS 18K FLOWER RING! WHAT A BEAUTY! $1,225.00 |
|
|
AMAZING & 80% OFF 27 DIAMOND WHITE GOLD FLOWER RING $350.00 |
|
|
0.25 CT DIAMOND FLOWER NECKLACE G SI-1 14K $199.99 |
|
|
HIDALGO~DIAMONDS~ENAMEL+18K~DAISY FLOWERS BAND~$1,700~ $813.75 |
|
|
.65CT CANARY YELLOW ROUND DIAMOND FLOWER EARRINGS STUD $399.00 |
|
|
14K Rose Gold Diamond Fashion Flower Ring by MORRIS & D $265.50 |
|
|
14K WG Diamond Fashion Flower Ring by MORRIS & DAVID $265.50 |
|
|
14K WG Emerald & Diamond Flower Ring by MORRIS & DAVID $896.40 |
|
|
14K WG Pink Sapphire & Diamond Flower Ring by MORRIS & $671.40 |
|
|
14K WG Sapphire & Diamond Flower Eternity Ring by MORRI $1,796.40 |
|
|
Sweet pink cz diamond purple enamel flower stud earring $12.99 |
|
|
14K White Gold Diamond Flower Eternity Ring by MORRIS & $1,795.50 |
|
|
14K YG Diamond Fashion Flower Ring by MORRIS & DAVID $265.50 |
|
|
14K Yellow Gold Flower Diamond Baby Bracelet Adjustable $119.98 |
|
|
Great Sterling Silver 925 Diamond Flower Stud Earrings $16.39 |
|
|
★Sparkling white★5 Real Diamonds Flower Nose Stud Ring★ $184.00 |
|
|
1 CT RED DIAMOND EARRINGS FLOWER DESIGN CLUSTER GOLD $299.00 |
|
|
1/2 CT BLUE DIAMOND FLOWER CLUSTER EARRINGS 14K GOLD $149.00 |
|
|
1/4 CT WHITE & BLUE DIAMOND EARRINGS CLUSTER FLOWER $149.00 |
|
|
2 CT WHITE & BLUE DIAMOND EARRINGS CLUSTER FLOWER $1,150.00 |
|
|
1/4 CT BLUE & WHITE DIAMOND EARRINGS CLUSTER FLOWER $125.00 |
|
|
1/2 CT BLUE & WHITE DIAMOND EARRINGS CLUSTER FLOWER $180.00 |
|
|
1 CT WHITE & BLUE DIAMOND EARRINGS CLUSTER FLOWER $499.00 |
|
|
1/2 CT WHITE & BLUE DIAMOND EARRINGS CLUSTER FLOWER $249.00 |
|
|
1/4 CT BLUE DIAMOND FLOWER CLUSTER EARRINGS 14K GOLD $99.00 |
|
|
1 CT BLUE DIAMOND FLOWER EARRINGS 14K WHITE GOLD $249.00 |
|
|
1 CT YELLOW DIAMOND EARRINGS FLOWER CLUSTER 14K GOLD $299.00 |
|
|
1/2 CT DIAMOND EARRINGS FLOWER DESIGN CLUSTER 14K GOLD $149.00 |
|
|
1/2 CT DIAMOND EARRINGS FLOWER DESIGN CLUSTER 14K GOLD $149.00 |
|
|
1.09cts SI1 CLARITY REAL DIAMOND FLOWER EARING $233.65 |
|
|
DIAMOND & BLUE SAPPHIRE WTE GOLD FLOWER STUD EARRINGS $59.99 |
|
|
14KT White Gold Diamond Flower Charm $295.00 |
|
|
Round & Bag Diamond Flower Earrings 14k WG .98 ct $969.00 |
|
|
White Flower Diamonds Lady Auto Mechanical Wrist Watch $0.99 |
|
|
Flower Diamond Gold Anniversary Ring Size 7 $125.25 |
|
|
New 14k Gold .63Ct Diamond Flower Screwback Earrings $476.99 |
|
|
14K White Gold Flower shape Diamond Engagement Ring! $675.08 |
|
|
Genuine Onyx Diamond Ring Sterling Silver Black Flower $82.20 |
|
|
1.00 ct DIAMOND EARRING STUD FLOWER white gold VS E $699.00 |
|
|
10k delightful emerald diamond flower ring y/g $19.99 |
|
|
TIFFANY LACE Platinum Diamond Flower Link Bracelet $6,000.00 |
|
|
Antique Victorian Diamond Turquoise Flower Gold Ring $695.00 |
|
|
14k Gold Sterling Coral Flower Amethyst Diamond pendant $69.99 |
|
|
1.92CT DIAMOND FLOWER PENDANT NECKLACE 14K WHITE GOLD $2,269.00 |
|
|
14K GOLD LADIES ESTATE .25 CTTW DIAMOND FLOWER RING NR $149.00 |





