 | | Journal (issue) | | right: Topaz, 8.4 cm, from Ouro Preto, Minas Gerais, Brazil. Lower left: Phosphophyllite, 2 cm, from the Unificada...Andrea Bartorelli: Minerals and Precious Stones of Brazil. Other important references (if any) for individual... 5.5 cm, from the Alto da Cabeca mine, Parelhas, Rio Grande do Norte, Brazil. Will Johnson collection...beryl, 7.5 cm, from near Araçuai, Minas Gerais, Brazil. The find predates the discovery of morganite at...to get this specimen, a complete floater, for my Brazil collection); Tom Spann photo. Reference: Cassedanne |  | | Journal (issue) | | with crown of lepidolite, from Virgem da Lapa, Minas Gerais, Brazil. (For more on the locality see the article...March-April, 1985 Recent discoveries of Phenakite in Brazil J. P. Cassedanne Instituto de Geociencias Cidade...Universitaria Ilha do Fundao. 29910 Rio de Janeiro, Brazil INTRODUCTION Phenakite, Be2Si04, occurs in granitic... The finest specimens known, however, are from Brazil, where two new occurrences have recently been discovered...approximately in the northern center of the state of Bahia. Access is easy via the Arara road, 17 km from Campo |  | | Book | | MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA © 2009 - CARLOS CORNEJO...McReath Spine photograph: Crystal of multicolored tourmaline (84 x 26 mm), Lavra do Sapo, Ferruginha, Conselheiro...Inside cover photographs: "Parafba" tourmaline (25 x 6 mm), Sao Jose da Batalha, Parafba. Courtesy of Bruno...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious |  | | Journal (issue) | | African rhodochrosite, 2.59 ct ParaĂba tourmaline from Brazil, 8.51 ct Sri Lankan spinel, 13.00 ct Madagascar...“padparadscha” sapphire, 2.12 ct ParaĂba tourmaline from Brazil. Photo of stones © GIA and Harold & Erica...presents a poster on golden rutilated quartz from Bahia, Brazil. Near right: Designer Michael Bondanza discusses...ground in the past few years. Spinel, garnet, tourmaline, and a variety of lesser-known gems such as prehnite...the branding of specific gems, such as Seafoam Tourmaline® (see figure) and Grape Garnet®. Columbia Gem |  | | Journal (issue) | | ” 3 cm, from St. Gotthard, Switzerland. (11) Tourmaline, 2.6 cm, from Elba, Italy. Refined Elegance...Gerais, Brazil. (4) Humite, 2.3 cm, from Mount Somma, Italy. (5) Palladium, 2.1 cm, from Brazil. (6) Mellite...from the Jequitinhonha River area, Minas Gerais, Brazil. 4 Refined Elegance, a Supplement to The Mineralogical... from Minas Gerais, Brazil. (10) Chrysoberyl, 2.4 cm, from Minas Gerais, Brazil. (11) Euclase, 2.1 cm...cm, from Minas Gerais, Brazil. (12) Olivine, 2.7 cm, from St. John’s Island, Egypt. given the poorly |  | | Journal (issue) | | “Sunset” quartz from Brazil • Swedish Blue (slag) and Swedish Iron Ore • Tourmaline mining at Nandihizana...cultured pearls • Treated violetish blue quartz from Brazil • Circular inclusions in a diffusion-treated sapphire...DIAMONDS (Fontanella et al., 1977; Balzaretti and da Jornada, 1996). As a result, when examined with crossed...GEMOLOGY WINTER 2006 219 REFERENCES Balzaretti N.M., da Jornada J.A.H. (1996) Pressure dependence of the...Update Winter 2001 An Update on “ParaĂba” Tourmaline from Brazil Spessartine Garnet from San Diego County |
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