The international unit of weight used for measuring diamond and gemstones, 1 carat is equal to 0.2 grams. Use below guide to estimate the size of your diamond.
The scale below illustrates the size of a 0.520000 diamond. Remember that while the measurements below are typical, every diamond is unique.
D colored diamonds are the rarest and totally colorless. Also the most valuable.
VVS2 This diamond has few, very small inclusions. The inclusions are very difficult to see under a 10x power magnification, and are almost never visible to the unaided eye. VS1 grade diamonds present an excellent value in clarity because they are typically free of visible blemishes, and they are less expensive than higher clarity grades.