Color in a diamond is a result of either a impurity (Nitrogen impurity is responsible for yellow color) or a structural defect (Brown color is a result of structural defect), Any color in a diamond significantly lowers the value of a diamond. Color in the range of D-E-F are known as the colorless range . Diamonds in colorless range are very rare and diamond Connoisseur all over the world appreciate the beauty of a colorless diamond. Diamond in the lower color such as G- H and lower are easily available and lower in value.