NEPHRITE
\nˈɛfɹa͡ɪt], \nˈɛfɹaɪt], \n_ˈɛ_f_ɹ_aɪ_t]\
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an amphibole mineral consisting of calcium magnesium silicate in monoclinic crystalline form; a source of jade that is less valuable than from jadeite; once believed to cure kidney disorders
By Princeton University