Difference assessment
Put the jade under the fluorescent lamp and observe its color change. Goods A and C are unchanged, and goods B are fluorescent white. C goods are dyed, so their colors are uneven along the cracks, which can be seen with the naked eye.
appraisal of quality
1 texture. Natural jadeite is transparent or translucent in texture, and its surface is bright and shiny. If you look closely, you can see the nearly round and slightly transparent "salt particles" and the fibrous substances around them.
② Hardness. Natural jadeite is jadeite, and its Mohs hardness is 7 degrees. It will be carved by a sharp knife without leaving any trace. The hardness of fake jade is low, so a sharp knife can draw it out.
3 Emerald. When natural jadeite is observed under strong light, emeralds with other mineral particles can be seen, which are called Cui Hua or emeralds. Fakes made of glass, plastic and porcelain have no such "emerald" characteristics.
④ Relative density (specific gravity). Natural jadeite has a hard and dense structure, no bubbles, high density, and clear sound when knocking; Fake products have loose structure or bubbles, low density and hoarse knocking sound.
⑤ color. The real product is rich and pure emerald color.
In layman's terms, experts look at seeds, while amateurs look at colors.
Species, generally speaking, refers to the texture and water head of jadeite, which is the basis for evaluating the quality of jadeite. Those who know how to look at jadeite should look at the variety first, and then look at the color on the basis of planting. People who don't know are often confused by colors. I don't know. The value of a bad jade is greatly reduced. Experts buy water first, and it is better to color it. When the water is planted, the value will go up, but the color may not have high value. For example, in Gan Qing, the color is good, but the water is not well planted, so the price is low.