https://www.lotusgemology.com/resources/4-treasures-reference-database/28751
On jade in China. Its places of production, varieties, literature, and manufacture. An introduction...
Bushnell, S.W. 1900. On jade in China. Its places of production, varieties, literature, and manufacture. An introduction to Yü Shuo, by T'ang Jung-tso. Four...
jade in chinaan introductionplacesproductionvarieties