When light enters a diamond, it breaks into its spectral elements - brilliant reds, blues and violets. It is for this reason that the most valuable diamonds are colorless. The absence of color allows the most natural light to pass through the diamond. Color is "graded" on a scale, from colorless to light yellow. Although the majority of diamonds appear to be colorless, virtually all have a tint of body color. If all other factors are equal, as the amount of color increases, the price of a diamond decreases (though this does not necessarily reduce the beauty of a diamond).

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