Jade (Nephrite) is a mineral.
Jade can be soft or hard. Generally speaking, jade refers to nephrite. It is one of the most common jewelry.
According to the local chronicle of Tengyue written by the Qing Dynasty's Jinshi Cun Kaitai, "Tengyue is the best, and the jade is made into vessels and sold to all provinces of Dianyuan. The high-quality jade is mostly sent to eastern Guangdong, Shanghai, Fujian, Zhejiang and Kyoto.
