What is the standard of good jade? Good jade has eight conditions or standards:
1 green is not blue
2 green to be evenly distributed
3 water is better
4 less impurities
5 cracks less
6" species" is old
7 Emerald green weight should be greater than 5 carats
8 work must have cultural connotations, exquisite novelty.
In addition to the above conditions, good jade raw materials must also have a standard ring-shaped green. What is the element of the green of jade? The reason for the emerald green is mainly due to the fact that it contains tens of parts of chromium oxide. In addition to the most valuable green, jadeite also produces blue, yellow-green, blue-green, purple, red, yellow, black and other colors. Most of their color-forming elements are iron, manganese, vanadium and iron. However, these kinds of coloring elements are harmful elements to the green color produced by chromium, which has a blue-induced gray effect on green color.
What color of jade is best? From the point of color difference, the best color of jade is that the emerald green, emerald green, apple green, and yellow scorpion green are the best. The following are blue-green, violet blue, red sputum, yellow-green, yellow, blue, gray-blue, and the like. The four or five colors of jade jewelry are called colorful jade, which is also very rare. But this color must be combined with the green and good water of the jade, and it must be less cracked in order to be worthless.
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