Color classifying scales used by the internationally admitted laboratories (GIA & IGI for example), ranges from wholly colorless (D) to pasty yellow or brown color (Z). Brown diamonds darker than K color are usually described using their letter grade, and a descriptive phrase, for pattern M Faint Brown Diamonds with fresh depth of color than Z color dive 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 rating laboratories in the cosmos Each of the adjudjing laboratories have developed a uncommonly matching terminology for identifying the 4 C’s of diamonds
D to Z
Color evaluating scales used by the internationally proclaimed laboratories (GIA & IGI for example), ranges from completely colorless (D) to wan yellow or brown color (Z) Brown diamonds darker than K color are usually described using their missive grade, and a descriptive phrase, for paradigm M Faint Brown. Diamonds with further 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 mesh rack of the diamond, and the exposure to radiation can all govern to the panoramic 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the impurities that are trapped inside diamonds when they are created If a few of the millions of carbon atoms retain been replaced by nitrogen atoms, then rack of the diamond leave not be significantly altered but the clarity leave be changed The number of color displayed is dependent on the amount of nitrogen involved.
When we see color it is because the item we are looking at reflected a specific wavelength of the decorate spectrum A benefit example of this is a yellow flower The flower absorbs all of the irradiate drop the yellow light, which is reflected by the yellow flower.
In the situation of a sorrowful colored diamond some of the nitrogen has been replaced by Boron Boron leave reflect the sad wavelength of the adorn spectrum The higher the concentration of boron the other color bequeath be showed At a level of one or a few boron atoms for every million-carbon atom, an captivating sad 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 emolument is immovable by the intensity of the color Pink diamonds keep 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 gain their color from a process known as Plastic Deformation
Type II diamonds posses extraordinary few if any nitrogen impurities in them They achieve their coloration due to structural anomalies caused by Plastic Deformation during the crystal growth. The intense force changes the framework form of diamonds and has led to the formation of Pink, and Red colored diamonds
A natural diamond coming into results with a radioactive author at some spot during its lifetime causes some diamonds to fashion a crude coloration The instance obligatory may be as much as a million years or longer Green diamonds of this attitude are very unique
The most average tunnel 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 fashion on the scratch of the diamond after want exposure to these particles Many times this uncooked coloration bequeath be removed during the cutting or faceting process
Bombardment by beta and gamma rays entrust color the diamond to a greater depth and in some incidential time turn the entire nut fresh Heating to temperature to equitable under 600 degrees Celsius can sometimes furthermore cause a diamond to evolve a unprepared ting Higher temperature may turn the aficionado 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 own been mined, traded, refined since 1900. But not a single threatening diamond has been discovered in the world’s mining fields The geological settings where diamonds are found or mined are virtually selfsame with the one exception, the Black Diamond
Black diamonds own been found to contain trace elements of nitrogen and hydrogen. The scan declared in 2006 analyzed the hydrogen in minatory diamond samples using infrared-detection apparatus and found that the quantity indicated that the mineral formed in a supernova explosion monastic 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 insolvable bodies that subsequently fell to Earth as meteorites