
ColorThe color of a diamond can range from colorless (pure white) to shades of yellow and brown. The closer a diamond is to colorless the more rare and expensive the diamond. If a diamond is colorless and very transparent, it may be given a "D" color grade. This is the highest color grade in the Gemological Institute of America's (GIA) grading system. The GIA color grading scale is as follows:  
  A truly colorless diamond is extremely rare; most diamonds possess various degrees of yellow or brown. Small, subtle differences in color can make a substantial difference in value. Although increasing shades of yellow reduce the value of a diamond, they do not necessarily reduce its beauty. If a diamond is well cut, refraction and dispersion will often disguise certain degrees of coloration. | ||||||||||
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