The evaluation principles for jade are 4C, 2T and 1V, which can be summarized as “five-good”, one degree and volume. “Five-good” refers to good jadeite, good water, good texture, good clarity, and good cutting. One degree refers to perfection degree. Volume refers to the size of volume. Generally speaking, the finished jade products can be evaluated from seven aspects as color, transparency, texture, clarity, cutting, crack and volume. Some people summarized it with the initials of the seven aspects’ English words.

4C refers to Color, Clarity, Cutting and Crack;

2T refers to Transparency and Texture;

1V refers to Volume.