beryl, emerald, Pakistan, gems

This is a comprehensive study of emeralds and emerald deposits in Pakistan. Nine chapters include: a review of geology and metallogenic provinces of Pakistan; geological setting of Pakistani emerald deposits; detailed description of each of the Pakistani emerald deposits known before 1989; gemological characteristics of Pakistani emeralds; regional chemical differences among emeralds and host rocks of Pakistan and Afghanistan; mineral chemistry of emeralds and associated minerals; a fluid inclusion study; geology of world emerald deposits; and origin and classification of Pakistani and world emerald deposits. The book also includes a comprehensive bibliography of the emerald deposit literature up to 1989. With color photos by E.J. Gübelin