Jade, in the context of antiques, refers to pieces made from the jade stone. The term jade is used to refer to two different minerals, nephrite and jadeite. The jade antiques made in China were mostly from nephrite. They have a milky appearance and can be scratched by a knife. Jadeite, on the other hand, has a glowing appearance. It is harder than steel. The figurines and jewelry made from jade are popular collectibles. Jade antiques include boulders, bowl, box, carvings, dish and censer.