 | | Journal (article/letter/editorial) | | ©Springer-Verlag 1990 Origin of emerald deposits of Brazil G. Giuliani 1. 2 , L. J. H. D. Silva 3 and P. Couto...Couto 4 1 2 3 4 ORSTOM, Universidade de Brasilia, Brazil c.R.P.G., 15 Rue N.D. des Pauvres, BP 20, 54501...Metais Ltda, Bahia, Brazil Secretaria das Minas e Energia, C.P.R.M./SGM, Bahia, Brazil Abstract. Precambrian...Precambrian emerald deposits of Brazil are found in a typical geologic setting with Archean basement and supracrustal... Gemstone deposits are of great importance in Brazil. Agate, amethyst, tourmaline, and topaz represent |  | | Journal (issue) | | m o n 16 Chrysoberyl and Alexandrite from the Pegmatite Districts of Minas Gerais, Brazil Keith Proctor...alexandrites near the town of Hematita in Minas Gerais, Brazil; in less than three months in 1987, more...aquamarine, like the material from Coronel Murta (Brazil) and Tongafeno (Malagasy Republic). As we have...beryl originally found at the Maxixe mine in Minas Gerais, Brazil, is colored by a similar but different...Newnham R.E. (1965) Crystal-field spectra of chrysoberyl, alexandrite, peridot, and sinhalite. American |  | | Book | | until he managed to reach the land of his dreams, Brazil. A specialist in the field of geology and mineralogy...crystals and the remarkable mineral treasures of Brazil, as well as the incredible adventures and difficulties...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL Cyan Magenta Yellow Black 1 Delev Ilia Deleff...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL SOFIA–MOSCOW 2004 3 Cyan Magenta Yellow Black...NATIONAL MUSEUM IN SOFIA 66 OTHER COLLECTIONS OF MINE IN BULGARIA 71 COLLECTIONS IN OTHER CITIES AROUND |  | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) | | sub-types hosted in: (IA) Mafic-ultramafic rocks (Brazil, Zambia, Russia, and others); (IB) Sedimentary...sub-types hosted in: (IIA) Mafic-ultramafic rocks (Brazil, Austria); (IIB) Sedimentary rocks-black shale...ct. Insufu rough emerald extracted from the Kagem mine in 2015. Lastly, on the 2th of October, the remarkable...(“the lion elephant”) was extracted from the same mine [3]. Other giant crystals have been discovered in...emerald crystals was discovered in the Carnaíba mine, Brazil; the specimen weighed 341 kg with 1.7 million |  | Ollier, Nadège, Fuchs, Yves, Cavani, Olivier, Horn, Adolf Heinrich, Rossano, Stéphanie (2015) Influence of impurities on Cr3+ luminescence properties in Brazilian emerald and alexandrite. European Journal of Mineralogy, 27 (6) 783-792 doi:10.1127/ejm/2015/0027-2484 | Journal (article/letter/editorial) | | Costa, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil ct ed pr Abstract: Emerald...chromiferous varieties of beryl, Be3Al2[Si6O18], and chrysoberyl, BeAl2O4, respectively, are, as gems, of high...interest. The Cr3þ properties in natural beryl and chrysoberyl samples have been studied by mainly photoluminescence...content and decreases when Cr increases. In chrysoberyl with low Cr content, the vanishing of Cr3þ emission...of beryl and chrysoberyl of diverse composition from various localities (mainly from Brazil) have been |  | | Journal (issue) | | INSTITUTE OF AMERICA Emeralds from Northeastern Brazil Diamantine: Coated Cubic Zirconia Precision Measurement...the Fazenda Bonfim Region, Rio Grande do Norte, Brazil J. C. (Hanco) Zwaan, Dorrit E. Jacob, Tobias Häger...Polished emeralds from this deposit in northeastern Brazil, discovered in 2006, typically display a saturated...rock from Pakistan • Cat’s-eye emerald from Belmont, Brazil • Meteorite watches • Purple common opal from...of the publisher. About the Cover For decades, Brazil has been one of the world’s major sources of fine |  | | Journal (issue) | | Era, Minas Gerais, Brazil David Stanley Epstein NOTES AND NEW TECHNIQUES The Growth of Brazil-Twinned...Potential for Synthetic Amethyst Twinned on the Brazil Law John I. Koivula and Emmanuel Fritsch Thermal...LCCAdams, Orleans, MA; Luiz Angelo, Rio de Janeiro, Brazil; Trea Arendsen, Lansing, MI; Scott M. Azmus, Corvallis...Morris, Newark, CA; Francisco Muller Bastos, Minas Gerais, Brazil; Colleen Witthoeft Nayuki, Montreal, Que...pearls range from 13 Lo 19 mm and are set with old mine-cut diamonds. The piece sold at auction for $82 |  | | Journal (article/letter/editorial) | | The EBPP is situated mainly in the State of Minas Gerais, but encompasses also parts of the States of...Universidade Federal de Minas Gerais, Av. AntoÃnio Carlos 6277, 31 000 Belo Horizonte MG, Brazil the context of...Argentina, (2) the north-eastern or Borborema in Brazil, and (3) the Eastern Brazilian. A description of...pegmatites of the north-eastern Pegmatite Province of Brazil and their geochemistry have been studied by Beurlen...Province (EBPP) is situated mainly in the State of Minas Gerais but also encompasses the southern part of the |  | | Journal (issue) | | SIX APRIL 1993 Cover Picture The Hematita mine in Minas Gérais in 1987 - probably the richest alexandrite...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil' pp. 333-54) ISSN: 0022-1252 F.G.A. your...to be able to deterAlthough it is very important mine if if a gem is natural or synthetic, and treated...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil JacquesCassedanne, Cassedanne, D.Sc.,* Maurice...Fundiio, Fundão, 21,910, Rio de Janeiro, Janeiro, Brazil *Institute of Geosciences UFRJ-CNPq, Cidade Universitaria |  | | Journal (issue) | | Centre, Federal University of Ouro Preto, Minas Gerais, Brazil **University of Mainz, FRG 1. Introduction...been the most important emerald mining region in Brazil until the discovery of the Santa Terezinha occurrence...investigations carried out on request of the Secretaria das Minas e Energia, performed by the Companhia Baiana de...emeralds of different j Brazilian occurrences. * 1: Itabira/MG; Hänni, Schwarz and Fischer (1987) * 2: Taua/CE;...Fisher, M., 1987. The emeralds of the Belmont Mine, Minas Gerais, Brazil. J. Gemm., 20(7/ 8), 446-56. Inda |  | | Report (issue) | | and trapiche emerald Rupert Hochleitner Brazil: Minas Gerais, Bahia, Ceara, Goias and Tocantins . . ...Asia: Pakistan, Afghanistan and India .......6 0 Old Mine Emeralds . . . . . . . . . . . . . . . . . . . ...Maharajahs and Maharanis held large emeralds (see "Old Mine Emeralds" page 62). The Color of Islam Emerald...quality. It was the gift of Emperor Dom Pedro I of Brazil to the 6 th Duke of Devon- shire. Also housed...some of the most productive emerald localities in Brazil, for example, more than 77 percent of the emerald |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais. Collection of Alvaro Lucio. Photograph taken...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...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite |  | | Journal (issue) | | Decade of Change A New Era for the Historic Coscuez Mine Esmeraldas Santa Rosa: Our Wealth is Green Rediscovery...Gemological Description of Ethiopian Emeralds Belmont Emeralds – Uncompromisingly Green Overview of Brazil’s...More Exquisite Emeralds Magnificent Old Mine Emeralds 143 Mine Visit A Visit to Colombia’s “Green” Emerald...Origins and Appellation President Clement Sabbagh, Brazil Vice Presidents Damien Cody, Australia Nirmal Kumar...Kumar Bardiya, India Treasurer Marcelo Ribeiro, Brazil Secretaries Bruce Bridges, USA Santpal Sinchawla |  | | Journal (issue) | | manager Famous mineral localities: the Broken Hill mine, Zam bia..............................................351 Famous mineral localities: the Cruzeiro mine, past and present ................................Warren A new find of crystallized rose quartz in Minas G e ra is ........................................B-2120 Schoten COVER: ELBAITE on quartz from Minas Gerais, Brazil. The crystal is 8.5 mm in width. Photo by...Kitwe, Zambia HISTORY The Broken Hill lead-zinc mine is located near the town of Kabwe, 140 km north |  | | Journal (issue) | | ........................................... 13 Brazil .................................................Lapidary, Hong Kong; CMP Asia, Hong Kong; GEA, Brazil; Emmanuel Piat, France; Israel Emerald Cutters...DIRECTORS Andrew Cody, Australia Sergio Martins, Brazil Emmanuel Piat, France Constantin Wild, Germany...to improve the color. Some kunzite buyers from Brazil also discovered that rough crystals they purchased...the production is mixed with calcite. The spinel mine at Kuh-i-Lal is being operated by a skeleton crew |  | | Journal (issue) | | Jewelry The Capao Topaz Deposit, Ouro Preto, Minas Gerais, Brazil Harry Winston: A Story Told in Diamonds...Gem-Bearing Pegmatites' A Review Gem Pegmatites of Minas Gerais, Brazil: Exploration, Occurrence, and Aquamarine...Orthoamphibole S p r i n g 1985 Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Aracuai Districts...Occurrence and Gemological Properties of Wessels Mine Sugilite Three Notable Fancy-Color Diamonds: Purplish...Flux-Grown Synthetic Emeralds Gem Pegmatites of Minas Gerais. Brazil: The Tourmalines of the Governador Valadares |  | | Journal (issue) | | Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By Aurélien...Collection V. L. Villani photo p. 758 Cover Photo: Brazil is the source of a variety of coloured stones,...old mine/ Muzo green emerald, sunrise and sunset padparadscha sapphire, honey-colour chrysoberyl and...zircon, apatite, topaz, sillimanite, fluorite, chrysoberyl, chal- For more than a century, the area near...ruby, sapphire, tourmaline, spessartine and chrysoberyl, as well as other gem minerals. The mining area |  | | Journal (issue) | | gemstone jewelry trends unveiled in Las Vegas 42 Brazil Governador Valadares show continues to thrive ...India Bhadresh Pandit, Tanzania Clement Sabbagh, Brazil Capt. Ramji Sharma, Japan Avner Sofiov, Israel...gemstone work C lement Sabbagh, the ICA Director in Brazil, received a diploma on behalf of the ICA from the...the municipality of Teofilo Otoni in Brazil which passed a motion thanking ICA via its president Andrew...community in the province of Minas Gerais which is the main region of Brazil for gemstone production. The |  | | Journal (issue) | | marketed, and merchandized. In diamonds especially, the mine-to-market process has been severely tested. Vertical...Namibia, as well as Madagascar), South America (Brazil and Colombia), central and southern Asia (Sri Lanka...Pakistan; and pink to red tourmalines from Nigeria and Brazil. Diamond was mined in northern Canada for the first...reference to the country rather than to the specific mine or region. For more on the specific localities,...mining also continued at traditional sources in Brazil and Africa. Large quantities of Brazilian emeralds |  | | Journal (issue) | | setting Gem sapphirine is being recovered from a mine about Sapphirine is derived and obtained from rocks...Sri Lanka the gem sapphirine comes from a carats. mine located near the 9th milepost along the Abstract...Preto, Minas Gerais, Brazil **University of Mainz, West Germany ***CPRM, Salvador, Bahia, Brazil 1. Introduction...occurrences in Brazil. Fig. 1. Ceara Cearâ CE-ll Tami CE-llTauâ Minas Gerais Minas MG-l MG-1 Mina Belmont (Itabira)...in Carnaiba. With the exception of the Belmont Mine in Itabira/MG, the mining methods in the Socotö area |  | | Journal (issue) | | asteriated quartz from Sri Lanka as well as in chrysoberyl cat's-eyes from India (Woensdregt et ai, 1980;...Notes on asterism in spinel and chatoyancy in chrysoberyl, quartz, tourmaline, zircon and scapolite. Journal...Soman, K., and Nair, N.G.K., 1985. Chatoyancy in chrysoberyl cat's-eye from pegmatites of Trivandrum District...asterismin asterism in spinel and chatoyancy in chrysoberyl, quartz, tourmaline, zircon and scapolite. J...BANK, F.H., 1987. A new alexandrite deposit in Brazil. Goldschmiedezeitung, 9, 91-2. A find of alexandrite |  | | Journal (issue) | | in 1917 the deep blue beryls from the Maxixe mine in Brazil have been a source of fascination both for...oligoclase, sillimanite, kornerupine, spodumene, chrysoberyl, anglesite and scheelite. There are now 46 stones...Spodumene Diopside Spinel Synthetic spinel Garnet Chrysoberyl Sapphire Synthetic sapphire Anglesite Scheelite... 122 (Zn,Mg/Fe2+)(Sn,Zn)2(Al,Fe3+)12022(OH)2/ chrysoberyl, cassiterite and columbotantalite. In the Wamba...encountered in emeralds from Colombia (Schwarz, 1995), Brazil (Hänni et al, 1987; Schwarz and Eidt, 1989; Schwarz |  | | Journal (issue) | | quantitative chemical analyses to distinguish samples from Brazil, Nigeria, and Mozambique. 660 Geographic Origin...Caplan. The back cover shows emeralds from the Chivor mine in Colombia (3.90 ct faceted stone and 2.35 cm crystal)...difficult to be certain the stones came from the mine where they were collected. Careful documentation...accounts for about 70% of worldwide production (Brazil, Zambia, Russia, and others). It is characterized...such as at the Santa Terezinha de Goiás deposit in Brazil. The subtype Type IIB is showcased by the Colombian |  | | Journal (article/letter/editorial) | | emerald mines in Colombia are becoming depleted. Brazil currently accounts for approximately 10% of world...samples from the Lened occurrence in Canada, the Muzo mine in Colombia, the Mohmand district in Pakistan, and...export values of emerald rough (Zwaan et al., 2005). Brazil currently accounts for approximately 10% of world...to 0.02% were of gem-quality. 89 Since then the mine has been re-opened and closed several times (Walton...1989). Light green emerald occurs with ruby, chrysoberyl (BeAl2O4), sapphire, topaz, fluorite, margarite |  | | Journal (issue) | | 1aquamarine, Santa Maria mine, Brazil; (2) 20.10-ct peridot, Burma; (3) 21.09-ct kunzite, Brazil; (4) 8.14-ct grossular...tourmaline, Queen Mine, Pala, California; (6) 15.18-ct tourmaline, Paraiba, Brazil; (7) 10.42-ct tanzanite...38-ct ruby, Burma; (17) 3.08ct tourmaline, Paraiba, Brazil; (18) 1.85-ct fancy purple-pink diamond, Argyle...number of new localities. Fine alexandrites from Brazil, sapphires from Southeast Asia and Australia, emeralds...pegmatite gemstones (tourmaline, aquamarine, etc.) from Brazil, Pakistan, Afghanistan, and several countries in |
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