Bashan material is the most representative new pit material. Most of the new pit materials came from "83 pit", because it was discovered late (1983) and the output was huge. At present, the raw materials for making jade ornaments mainly come from that mining area. "Bashan Jade" is a kind of "brick material", with coarse crystal material, loose structure, dry water and poor bottom, but rich colors, such as lavender, light green, green or blue gray. It is a special low-grade jade, containing amphibole, albite and other minerals. Because Bashan jade has many impurities, rough structure and poor water head, it must be treated manually to make decorations. The Bashan jade on the market is actually a jadeite B product obtained by pickling and injecting glue. After artificial treatment, this variety has bright color and good transparency, and it is the most popular jadeite B product in recent years. Bashan jade has four characteristics: ① bright color, black and big, and an ornament often has green, purple and white; (2) The particles are coarse, the structure is loose, and the sound is dull when hitting; ③ Low hardness. The hardness of Bashan jade is often 6, while the hardness of most jadeite varieties is between 6.5 and 7. ④ Light weight, i.e. low density. The density of Bashan jade is less than 3.32g/cm3. The processed Bashan jade has good ornamental and practical value, and the price is low, which is more suitable for low-income young women. It should be pointed out that the structure of Bashan jade has been destroyed, with many cracks and poor durability, and there is no possibility of collection value and preservation.