Cutting, clarity, color, weight.

Evaluation of cutting classification.

China's magic star diamond grading standard divides the cutting into three grades: very good, good and average.

Evaluation of cleanliness classification,

Usually 10 times magnifying glass is used to observe the inside and outside of the magic star diamond. The clarity grades of Magic Star diamonds are subdivided into FL, IF, VVS 1, VVS2, SI 1, SI2, L 1, L2 and L3.

GIA classifies jewelry into 23 grades, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z. The best color is D, and the more forward it is, the more colorless and transparent it is. The more yellow, the lower the level. D-F is transparent and colorless, G-J is almost colorless, K-M is yellowish, N-R is yellowish, and S-Z is yellow. N-Z belongs to colored diamond, but there are other colors, such as pink, green and blue.

The heavier the better.