Diamond Color Chart

Picture
When we speak of grading a diamond for color we mean deciding by which amount the diamond's "body color" deviates from the whitest possible (water like colorless) color.

It is difficult to see the subtle differences between one color grade to the next. When grading diamonds for color it is important to have a Master Color Diamond Set (pre-graded diamonds usually E-G-I-J) to compare the diamond being graded. Also a controlled lighting environment is helpful for accuracy. Diamonds must always be graded unset to ensure grading accuracy.

Diamond Clarity Chart / Scale

Picture
Most diamonds aren't perfect and include blemishes, inclusions, or feathers naturally created through time. The clarity of a diamond refers to how clean or clear a diamond is internally. The cleaner the diamond, the higher the price. The clarity scale was developed to have a universal rating system of diamonds imperfections.

Diamond Carat Weight Chart

Picture
Diamonds are measured by carat weight, and not size. Two diamonds having the same carat weight could have different millimeter sizes because a diamond is three dimensional meaning length, width, and depth. The scale below is a comparison of the sizes based upon carat weight with cutting percentages being the same.