1 look at the color. See if the color is pure, rich, even, and use a spotlight to check for hidden variegated colors. It is better for the color to be rich, pure, uniform, and the impurities are small. Emerald green has a higher price, followed by red and purple. In the green, the seedling green with fresh and slightly yellowish color is the best, followed by the gem green, the river green, and the oil green, all of which are evenly distributed in green. 2 Observe transparency. Observed under strong light, the higher the transparency, the better. 3 listen to the sound. It is better to have a crisp and sweet sound. 4 observe the green and stone flowers. In the observation of light, there are other mineral particles in the jade (ie, green), and often have a mass of white flowers, called stone flowers. Both are less good. 5 Look at cracks and dark spots. Some of the cracks are present in the ore, and some are caused by processing, and less is good; the black spots are black spots everywhere in the jade, and it is also small and small. 6 look at the processing level. The surface is smooth, polished and in good shape. Polyester Embroider Fabric,Polyester Stretch Fabric,100% Polyester Embroidered Fabric,Polyester Embroidered Sequin Fabric Shaoxing Chengao Textile Co.,Ltd , https://www.chengaotextile.com