gems, mineralogy, gemology, jade, jadeite, fei cui, nephrite, amphibole jade, yu, pyroxene jade

Sinkankas: A substantial technical article covering the chemistry and analysis of jade, including the investigations of Heber Reginald Bishop published in Investigations and Studies in Jade (1906). Topics discussed include physical properties, cohesive properties, melting points, reactions to acids and other reagents, the mineralogical characteristics of nephrite and jadeite, and their occurrence and origin. The article was also issued separately as an offprint.