First of all, identify the true and false jadeite from its color.
1. Natural jadeite: the difference of jadeite color grade is reflected in the great correlation in value. When identifying and evaluating jadeite, we must first distinguish its color, especially the green jadeite is expensive. When identifying green jadeite, we must look at whether the color of jadeite is natural.
2. Fake jadeite: jadeite with too bright color or floating on the surface must be careful. The boundaries between colored and colorless parts of many dyed jadeites are unclear, showing a gradual transition, and the colored parts will fade or disappear under the irradiation of transmitted light, which is called "seeing death". In addition, if the jadeite is dyed for too long, the green color will become lighter and yellow, which is commonly known as fading. After all, it's dyed and won't burn for long.
Second, identify the transparency of jadeite.
1, natural jadeite: the transparency of natural jadeite is uneven, the texture of the green part is fine, and there is relatively little cotton wool, which will be more transparent; The texture of the white part is thicker, the cotton wool will be more, and the transparency will be worse; Moreover, the boundary between transparent and opaque parts will be relatively clear, and the transparent part will be more thorough and clear. The whole presents a feeling of natural formation.
2. Fake jadeite: The jadeite treated by glue injection, dyeing and glue injection (B, C, B+C) is made of low-grade jadeite with rough texture, and the transparency of jadeite is consistent everywhere, even the transparency of green part is lower than that of white part, so it has a hazy white fog feeling on the whole, which is unclear. What's more, it deceives consumers and directly polishes the bottom of beer bottles into bracelets and beads. Be sure to polish your eyes!
Third, identify jade to see the cleanliness of jade.
1. Natural jadeite: A piece of jadeite may contain some impurities to some extent, such as some black dirty spots composed of iron and chromite, which are called "fly excrement" and yellow-brown secondary "rust color" caused by iron oxide.
Therefore, you can generally see the yellow "rusty silk" jadeite, which is basically natural untreated jadeite. Impurities are not defects, but the best proof of natural formation.
2, artificial jadeite: B and B+C jadeite is corroded by strong acid, and impurities such as iron on the surface will be soaked and removed, so the surface will be relatively clean, and there will be no impurities such as yellow rust wires and black spots.
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