An amateur of antiques collection- Ouyang Renkai showed his collection of “Kaiyuantongbao” ....2015-05-19

Nephrite of China is mainly originated in Xinjiang province ....2015-05-11

The evaluation principles for jade are 4C, 2T and 1V, which can be summarized ....2015-05-11

The natural output state of garnet is granular that looks like seed of pomegranate ....2015-05-11

Chenzhou city is famous as “coal base” and “county of non-ferrous metals” of China and was named as“Chinese mineral crystal city& ....2015-05-11

Following are 9 indexes for the evaluation of mineral crystal decoration stone ....2015-04-17

Chinese gem industry called the tourmaline as “Bi Xi”. “Xi” referred to the seal of emperor ....2015-04-17