Traditional white diamonds (colorless diamonds), like those found in most classic engagement rings, tennis bracelets, pendants, and diamond earrings, are created from a complex process involving super-heated, highly pressurized carbon molecules close to the Earth’s core. Natural Colored diamonds found all over the world are created in the same fashion, with one unique difference. When foreign particulates are trapped during the crystallization process from which diamonds are formed, it effects and alters the chemical process and thus, changes the outcome. The result is a beautiful, rare, and exceptional diamond with unique colorings - this are called natural fancy colored diamonds. Different trace minerals and particulates result in different hues, as well as different intensities of those hues.
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Colored diamonds come in as many hues and intensities as nature can possibly muster. Not only can trace minerals influence color, but variations in the amount of pressure exerted to produce the diamonds, as well as radiation levels in the Earth’s mantle layer can also influence diamond colors. In order to produce a particular hue, thousands of variables must be present in just the right amounts, at just the right times. Since scientists have never been able to observe a natural diamond being formed, the exact type and proportion of variables necessary are nearly impossible to determine. However, there are basics that have become understood.
For example, boron produces fancy blue diamonds, while hydrogen will produce purple or violet colored diamonds. Likewise, nitrogen in the right amounts will produce orange or yellow diamonds. Diamonds in the red to brown category have been scientifically proven to have an internal structure far more compressed than average white diamonds. For example, according to the Natural Color Diamond Association, argyle diamonds (aka argyle pink diamonds) show nearly ten times the amount of high pressure graining as more traditional diamonds. This graining is evidence of high-pressure conditions well above what it would take to form a white diamond.
Once a diamond has already formed, its future could still ultimately produce anatural colored diamond. Natural Green Diamonds are created after diamond crystals form and are exposed to radiation deep in the Earth’s mantle for millions of years. Of course, the geography of the planet and naturally present trace mineral deposits and other conditions lend to certain colors or hue intensities to be found in various areas of the world. For example, Angola is known for large diamonds in yellow, brown, or pink hues. Borneo is known for exceptionally beautiful, although extremely rare blue diamonds or blue-white diamonds. Sierra Leone is known for unique olive green diamonds from the Zimi mine.
In late years the popularity of colored diamonds has grown tremendously, getting into the consciousness of more and more people. Funny enough one of the main reasons is simply branding... Here are some of the most familiar colored diamonds names: Brown Diamonds in the USA are usually refered to as Chocolate Diamonds when they have a dark tone or Champagne Diamonds if the have yellowish hue in them. Strong pure Yellow Diamonds (with no secondary hue), for example fancy intense yellow diamonds are known as canary diamonds.