BIBLIOGRAPHY

1. Graziani G., Gubelin E. and Lucchesi S. "Report on the Investigation of an Emerald from the Kitwe District, Zambia" Australian Gemmologist, 15, 1984, p. 227-234

2. Koivula J. I. "Tourmaline as an Inclusion in Zambian Emeralds" Gems & Gemology, Winter 1982, p. 225-227

3. Sinkankas J. 1981 "Emeralds and Other Beryls" Pensylvania, Chilton Book Co. p.371-377