What is diamond 4 c standard? The most important thing is which one? Even more unique diamond, also can have its diamond 4 c, 4 c standard is established by the GIA diamond, diamond 4 c standard is used to measure price of a diamond and the important basis of quality, today let the author introduces the diamond 4 c standard for everybody! Moon and legendary diamond 4 c standard mainly refers to the weight of the diamond ( Carat) , clarity, 清晰) , cut ( 削减) And the color ( 颜色) , for the first letter of each word is from the beginning of the C, convenient to call, then referred to as the 4 C diamond, diamond is relatively easy to understand, the weight of the measuring unit as carat diamond weight, a carat is equal to 0. 2 g is equal to a percentage, generally if it is below the carat we use 'points' to say, if the carat more directly, with a diamond carat above is big drill, and the color of the diamond is mainly refers to the shade of the diamond, color more close to colorless better, D is the highest, from D to decline between Z! And diamond studs are refers to the drawbacks of diamond, diamond studs are visible below level P, P level more than ten times generally need a microscope to see it to the drawbacks of diamond, diamond diamond cutters in 4 c standard is only in the 4 c that can influence the diamond segment, a diamond can play a good flash, cut is particularly important, the market is the mainstream of cutters is Cupid cutters, also is what we usually call eight heart eight arrows! Cutters are divided into poor, fair, good, good and excellent five grades! Diamond 4 c standard of the most important thing is to diamond cutters, a good cut no matter from which Angle to see the diamond, diamond sparkle out, can be seen for diamond 4 c standard of the author is given to you at this point, the choose and buy a good diamond need to have a good knowledge of diamond, in this way can choose to diamond has the very high cost performance, it can also be undesirable businessman fooled, prevention knowledge for diamond 4 c landing welcome jewelry net to know more about knowledge, jewelry is a jewelry processing directly to consumers, prices are generally jewelry store in general, the same money can buy better diamond, what would you choose?