1, yellow salt sand skin rock, with different sizes and abundant output, is the first-class product of yellow sand skin with a yellow shell like salt. Generally speaking, yellow salt sand skin is a good product as long as the sand grains are uniform. Mabel Miao or boxwood green jadeite is often produced, and there may be three colors: green, purple, flying and floating green, which are the most common shell characteristics of high-colored jadeite.
2. Water turns over sand-skinned rocks, and the skin is rust-colored, one piece or one piece, a few are yellow or yellow-gray, and most of them are there. The key is to see if the sand is turned evenly.
3. The skin of the black Wushapishan stone is black, and there are three kinds of sand grains, coarse and fine. The thick ones are mostly seen at the bottom of thick beans, the middle ones are waxy beans, and the thin ones are seen at the bottom of fine beans. This is also the shell feature of high-colored jadeite, which is mainly produced in the third floor of the old field, the back field and the small field.
4. Yellow pear skin stone, with yellow pear color, slightly transparent and high color content, is mostly high-grade jade material, which is mostly produced at the mouth of Namubang concave field in Damakan field.
5. White salt sand skin rocks, with different sizes, are mainly produced in Mana in the old field and Mogdiei in the small field, and are the first-class products in white sand skin. The jadeite of this kind of skin has fine texture and good transparency. If jadeite is planted in an old pit, Mabel Miao will appear. However, if the skin is firm and smooth, most species are not good either.
6. The potato skin is half a mountain and half a water stone, which looks like a potato. The skin is thin and yellow, with good transparency, good foundation and waxy bottom. It is produced in Dabakan, Namo, Ban and other places.
7. Tieshapi mountain stone, with good bottom, rust spots and original stones on the skin, produced in Dongguochangkou.
8. The skin of bacon is watery, red as bacon, smooth and transparent, with thick and thin skin and thick and thin seed bottom. It belongs to medium jadeite, which leaves the country a lot, but few have emerald color.
9. Myrica rubra shapirite, with different sizes and dark red surface, looks like a ripe Myrica rubra. There are many places that produce this kind of sand shell, such as putting it on the bridge, xianggong, damakan, poor ladle, mana and so on. And it is more common to look at the bottom of the bean. If it has brown betel nut rust on its shell, its color is not good.
10, bamboo leaf skin is half mountain and half water stone, yellow and white, thin, transparent or opaque, with the largest yield at the entrance of Damakan, and also at other old entrances.