I 2 Imperfect. More inclusions than I 1 . I 3 Imperfect. More inclusions than I 2 . Stone lifeless and dull, integrity of stone usually at risk.
Color is an important factor to beauty, rarity and value.
The color of a diamond becomes more rare as the color becomes less intense or is absent all together. The color that you probably recognize the most is yellow. However, diamonds come in every color of the rainbow and some are rarer than others. Some of the very rare colors are pink, blue, green and red. The absence of color in a diamond, known as a Colorless Diamond , is the most rare and most valuable.