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Brazil | |
| Hall, C. (1998) Identifying Gems & Precious Stones (The new compact study guide and identifier). Chartwell Books, Inc., 80 pp. (p. 18). Derby, O.A. (1907) The geology of the diamond and carbonado washings of Bahia, Brazil. Government Printing Office. Smithsonian Report for 1906, 215-221. |
| Herold, M. W., & Rines, S. (2014). A Half-century monopoly (1880-1930s): the black diamonds (carbonados) of Bahia and Jewish Merchants. Revista Ciências Administrativas, 17(1) |
Bahia, Brazil