Diamond Grading Details
Diamonds occur in various colors including yellow, green, orange, various shades of pink and red, brown, gray and black. Before the development of the Argyle diamond mine in Australia in 1986, most brown diamonds were considered worthless for jewelry; they were even not assessed on the diamond color scale, and were predominantly used for industrial purposes. However, marketing strategies changed in the 1980s and brown diamonds have become popular gems.[2][3] The change was mostly due to supply: the Argyle mine, with its 35 million carats (7,000 kg) of diamonds per year, makes about one third of global production of natural diamonds;[4] 80% of Argyle diamonds are brown.[5] The percentage of brown diamonds is lower in other mines, but it is almost always a significant part of the total production.[6] Consequently, scientific research has intensified on causes of brown color in diamond and ways to alter it.
Diamonds occur in various colors including yellow, green, orange, various shades of pink and red, brown, gray and black. Before the development of the Argyle diamond mine in Australia in 1986, most brown diamonds were considered worthless for jewelry; they were even not assessed on the diamond color scale, and were predominantly used for industrial purposes. However, marketing strategies changed in the 1980s and brown diamonds have become popular gems.[2][3] The change was mostly due to supply: the Argyle mine, with its 35 million carats (7,000 kg) of diamonds per year, makes about one third of global production of natural diamonds;[4] 80% of Argyle diamonds are brown.[5] The percentage of brown diamonds is lower in other mines, but it is almost always a significant part of the total production.[6] Consequently, scientific research has intensified on causes of brown color in diamond and ways to alter it.
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
Diamond Grading
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