Although there is no specific standard and pricing principle for jade, there are its grading standards and factors affecting value. The standard body of jadeite is divided into colored (green, purple, other colors, etc.) jade grading and colorless. There are two parts of the jade grading. The following is a detailed introduction by the China Jewelry Merchants Network .
Colored emerald level standard
1, color
According to the difference of jade color, it is divided into three categories: green, green (light yellow) and green (micro blue). The tone category is expressed as G, yG, and bG at a time.
2, brightness
According to the difference in jade brightness, it is divided into four levels. The brightness level is expressed from high to low in order of brightness (V1), brighter (V2), and darker (V3) dark (V4).
3, chroma
According to the difference in the color of the jade, it is divided into five levels. The chroma levels from high to low are expressed as extremely rich (Ch1), rich (Ch2), richer (Ch3), lighter (Ch4), and lighter (Ch5).
4, texture
According to the difference in the texture of the jade, it is divided into five levels. The texture level is expressed from high to low in order of very fine (Te1), fine (Te2), finer (Te3) thicker (Te4), and coarse (Te5).
5, clarity
According to the difference in the purity of the jade, it is divided into five levels. The grades of clarity from high to low are expressed as extremely pure (C1), pure (C2), purer (C3), still pure (C4), and impure (C5).
6, transparency
According to the difference in the transparency of Jade, it is divided into four levels. The transparency levels are expressed as transparent (T1), sub-transparent (T2), translucent (T3), and micro-transparent-opaque (T4) from high to low.
Colorless jade grade standard
1, texture
According to the difference in jade (green) texture, it is divided into five levels. The texture level is expressed from high to low in order of very fine (Te1), fine (Te2), finer (Te3) thicker (Te4), and coarse (Te5).
2, clarity
According to the difference in purity of jade (green), it is divided into five levels. The grades of clarity from high to low are expressed as extremely pure (C1), pure (C2), purer (C3), still pure (C4), and impure (C5).
3. Transparency
According to the difference in jade (colorless) transparency, it is divided into five levels. The transparency levels are represented by transparent (T1), sub-transparent (T2), translucent (T3) micro-transparent (T4), and opaque (T5).
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