The English name of jadeite is jadeite, which belongs to jadeite. Its chemical composition is sodium aluminum silicate. Due to the influence of trace iron and chromium, the jadeite displays various colors. The basic colors are red, green and yellow. Purple, white, gray, black and ochre. Generally, the red is praised, the green is called green, and the soft and delicate green jade is the most precious, so people often refer to jade as green jade.
The best color in the jade is considered to be thick ice green, its appearance is pure and transparent, and the color is rich; in turn, it is gem green, the color is crystal clear and pure; the boxwood green is translucent, such as the new leaves of early spring, the poplar green; , delicate as green onion; green beans, green as green beans.
The method for identifying jade quality is as follows:
l. Look at the color to pay attention to the color is pure, shady, gorgeous, even and so on, and observe whether there are hidden mottled colors with strong light. It is better to be rich in color, pure, uniform, and small in impurities.
2. Transparency is observed under strong light, and the higher the transparency, the better.
3. It is better to listen to the sound of the knocking sound.
4. Observe the observation of the green and stone flowers. There are other mineral particles in the jade (ie, green), and often have a block of white flowers, called stone flowers. Both are less good.
5. Cracks and black spot cracks are found in the original ore, and some are caused by processing, with less is good; black spots are black spots everywhere in the jade, but also small and small is better.
6. Pay attention to the processing level such as thickness, shape, brightness and so on.
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