Color classifying scales used by the internationally admitted laboratories (GIA & IGI for example), ranges from totally colorless (D) to pallid yellow or brown color (Z). Brown diamonds darker than K color are usually described using their memorandum grade, and a descriptive phrase, for pattern M Faint Brown Diamonds with more depth of color than Z color fall into the fancy color diamond range
Why Are Some Diamonds Colored
The Gemological Institute of America (GIA), the American Gem Society (AGS), and the International Gemological Institute (IGI) are the three most widely admitted and respected diamond adjudjing laboratories in the world. Each of the classifying laboratories retain developed a thumping corresponding lingo for identifying the 4 C’s of diamonds
D to Z
Color evaluating scales used by the internationally avowed laboratories (GIA & IGI for example), ranges from fairly colorless (D) to yellowish yellow or brown color (Z) Brown diamonds darker than K color are usually described using their note grade, and a descriptive phrase, for paradigm M Faint Brown. Diamonds with other depth of color than Z color plunge 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 web holder of the diamond, and the exposure to radiation can all model to the sweeping verity of colors available in 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the impurities that are trapped inside diamonds when they are created If a few of the millions of carbon atoms retain been replaced by nitrogen atoms, then structure of the diamond entrust not be significantly altered but the clarity commit be changed The amount of color displayed is dependent on the character of nitrogen involved.
When we see color it is because the phenomenon we are looking at reflected a specific wavelength of the decorate spectrum A gain exemplar of this is a yellow flower The flower absorbs all of the embellish eliminate the yellow light, which is reflected by the yellow flower
In the occasion of a unhappy colored diamond some of the nitrogen has been replaced by Boron. Boron commit reflect the melancholy wavelength of the illuminate spectrum The higher the concentration of boron the more color commit be showed At a merit of one or a few boron atoms for every million-carbon atom, an appealing sorrowful color results
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 unrelenting by the intensity of the color. Pink diamonds obtain 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 earn their color from a process recognized as Plastic Deformation
Type II diamonds hold uncommonly few if any nitrogen impurities in them They gain their coloration due to structural anomalies caused by Plastic Deformation during the crystal growth. The intense require changes the fretwork trestle of diamonds and has led to the formation of Pink, and Red colored diamonds
A standard diamond coming into contact with a radioactive fountain at some iota during its lifetime causes some diamonds to fashion a unprepared coloration The time needed may be as much as a million years or longer Green diamonds of this mind are very unique
The most normal 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 bony fresh film may flourish on the abrasion of the diamond after enthusiasm exposure to these particles. Many times this crude 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 perfect aficionado green. Heating to temperature to just beneath 600 degrees Celsius can sometimes also model a diamond to develop a unfinished ting Higher temperature may turn the devotee to a less desirable yellow or brown color
Black diamonds are found only in Brazil and the Central African Republic Approximately 600 tons of conventional diamonds posses been mined, traded, proper since 1900. But not a single dark diamond has been discovered in the world’s mining fields The geological settings where diamonds are found or mined are virtually twin with the one exception, the Black Diamond
Black diamonds hold been found to contain trace elements of nitrogen and hydrogen The inspect admitted in 2006 analyzed the hydrogen in black diamond samples using infrared-detection equipment and found that the character indicated that the mineral formed in a supernova explosion religious 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 oppressive bodies that subsequently fell to Earth as meteorites.