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Brazil | |
| Sauer, Jules Roger (1982) Brazil - Paradise of Gemstones. Gemological Institute of America (GIA) |
| Sauer, Jules Roger (1982) Brazil - Paradise of Gemstones. Gemological Institute of America (GIA) |
| Sauer, Jules Roger (1982) Brazil - Paradise of Gemstones. Gemological Institute of America (GIA) Rock Currier |
| Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 98-99). |
| www.mindat.org (n.d.) https://www.mindat.org/photo-65094.html www.mindat.org (n.d.) https://www.mindat.org/photo-266153.html |
| Sauer, Jules Roger (1982) Brazil - Paradise of Gemstones. Gemological Institute of America (GIA) |
| Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 44-45). |
| Sauer, Jules Roger (1982) Brazil - Paradise of Gemstones. Gemological Institute of America (GIA) |
| Sauer, Jules Roger (1982) Brazil - Paradise of Gemstones. Gemological Institute of America (GIA) |
| luigi chiappino specimen |
| Sauer, Jules Roger (1982) Brazil - Paradise of Gemstones. Gemological Institute of America (GIA) |
| Sauer, Jules Roger (1982) Brazil - Paradise of Gemstones. Gemological Institute of America (GIA) |
| Sauer, Jules Roger (1982) Brazil - Paradise of Gemstones. Gemological Institute of America (GIA) |
| Christian Bracke |
| Morteani, G., Preinfalk, C., Horn, A. H. (2000) Classification and mineralization potential of the pegmatites of the Eastern Brazilian Pegmatite Province. Mineralium Deposita, 35 (7) 638-655 doi:10.1007/s001260050268 |
Minas Gerais, Brazil