 | | Journal (issue) | | statue at Vientiane’s Haw Phra Kaew (Temple of the Emerald Buddha); rough and faceted sapphires from Laos...Gemstone Miners – The Case of the Tsavorite Mines in Southeast Kenya Gemology 22 30 Three-Dimensional...Gemstone and Pearl Testing 36 Emeralds from South America – Brazil and Colombia 48 Clinohumite – The...rise of new economies such as China, India, and Brazil. The challenges have been numerous as these new...every ICA member, I would like to thank the IBGM in Brazil along with every company, individual, and government |  | | Journal (issue) | | London ABSTRACT: Blue euclase from Mwame, Hurungwe District, Zimbabwe, which was first collected in the late...late-stage hydrothermal mineral often associated with beryl and other beryllium minerals in a variety of host...of other beryllium minerals. First recorded from Brazil in 1785 (Dana, 1892; Bastos, 1969), euclase has...Claims, 8 km south of Mikese Station, Morogoro District. The largest of these crystals measuring 72 x...of euclase from Muiane pegmatite, Alto Ligonha District, was made by von Knorring et al. (1964). This |  | 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) | | minerals Review Emerald Deposits: A Review and Enhanced Classification Gaston Giuliani 1, *, Lee A.... Université Paul Sabatier, GET/IRD et Université de Lorraine, CRPG/CNRS, 15 rue Notre-Dame des Pauvres...Scotland, UK; fallickt@gmail.com Institut des Sciences de la Terre d’Orléans (ISTO), UMR 7327-CNRS/Université...February 2019 Abstract: Although emerald deposits are relatively rare, they can be formed...systems and models currently used to describe emerald precipitation and predict its occurrence are too |  | Giuliani, G., France-Lanord, C., Zimmermann, J. L., Cheilletz, A., Arboleda, C., Charoy, B., Coget, P., Fontan, F., Giard, D. (1997) Fluid Composition, δD of Channel H2O, and δ18O of Lattice Oxygen in Beryls: Genetic Implications for Brazilian, Colombian, and Afghanistani Emerald Deposits. International Geology Review, 39 (5) 400-424 doi:10.1080/00206819709465280 | Journal (article/letter/editorial) | | article was downloaded by: [Universitat Politècnica de València] On: 23 October 2014, At: 01:24 Publisher:...Implications for Brazilian, Colombian, and Afghanistani Emerald Deposits a b b G. Giuliani , C. France-Lanord...Coget , F. Fontan & D. Giard h a Institut Français de la Recherche Scientifique pour le Developpement en...Fayette, Paris cedex 10, 75480, France b Centre de Recherches Petrographiques et Géochimiques (CRPGCNRS)...Ecole Nationale Superieure de Géologie—Institut National Polytechnique de Lorraine (ENSG-INPL) , BP 452 |  | Abdel Gawad, Ahmed E., Ene, Antoaneta, Skublov, Sergey G., Gavrilchik, Alexandra K., Ali, Mohamed A., Ghoneim, Mohamed M., Nastavkin, Aleksey V. (2022) Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt. Minerals, 12 (2) 206 doi:10.3390/min12020206 | Journal (article/letter/editorial) | | Article Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt Ahmed...A.V. Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt. Minerals...and Environment, Physics and Environment, Dunarea de Jos University of Galati, 47 Domneasca Street, 800008...Ene@ugal.ro (A.E.) Abstract: Beryl occurs in the ancient Roman mines at Wadi Nugrus, South Eastern Desert...and Fe correlate with the color zoning, and where beryl crystals have a maximum of these elements, the green |  | Ribeiro-Althoff, A. M., Cheilletz, A., Giuliani, G., Féraud, G., Camacho, G. Barbosa, Zimmermann, J. L. (1997) 40Ar/39Ar and K-Ar Geochronological Evidence for Two Periods (∼2 Ga and 650 to 500 Ma) of Emerald Formation in Brazil. International Geology Review, 39 (10) 924-937 doi:10.1080/00206819709465310 | Journal (article/letter/editorial) | | Periods (∼2 Ga and 650 to 500 Ma) of Emerald Formation in Brazil a a a b A. M. Ribeiro-Althoff , A...Barbosa Camacho & J. L. Zimmermann c a Centre de Recherches Petrographiques et Geochimiques (CRPGCNRS)...Géosciences Azur, EP 125-CNRS, Nice, France c Centre de Recherches Petrographiques et Geochimiques (CRPGCNRS)...Periods (∼2 Ga and 650 to 500 Ma) of Emerald Formation in Brazil, International Geology Review, 39:10...of Emerald Formation in Brazil1 A. M. RIBEIRO-ALTHOFF, 2 A. CHEILLETZ, 3 G. GIULIANI, 4 Centre de Recherches |  | | Journal (article/letter/editorial) | | Significance of Fluids in Channels of Colombian Emeralds: A MassSpectrometric Study a b c J. L. Zimmermann...Arboleda d a Centre de Recherches Pétrographiques et Géochimiques—Centre National de la Recherche Scientifique...Vandoeuvre-lès-Nancy, 54520, France b Institut Francais de la Recherche Scientifique pour le Devéloppement en...Ecole Nationale Supérieure de Géologie—Institut National Polytechnique de Lorraine (ENSG-INPL) , 452...Significance of Fluids in Channels of Colombian Emeralds: A Mass-Spectrometric Study, International Geology |  | | Journal (article/letter/editorial) | | i e r. c o m / l o c a t e / o r e g e o r ev Emerald deposits and occurrences: A review L.A. Groat a... British Columbia, Canada V6T 1Z4 IRD and Centre de Recherches Pétrographiques et Géochimiques/CNRS,...Available online 22 April 2008 Keywords: Emerald deposits Emerald occurrences Crystal chemistry Geochemistry...Classification Exploration A B S T R A C T Emerald, the green gem variety of beryl, is the third most valuable gemstone...year) of the world's emeralds. However there is speculation that the emerald mines in Colombia are becoming |  | | 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...MINERAL TREASURES OF BRAZIL 76 85 AN OUTLINE OF THE MINERAL RESOURCES OF BRAZIL ORIGIN OF GIANT CRYSTALS |  | | Journal (issue) | | SPECIAL ISSUE December 2015 WORLD EMERALD UPDATE Highlights of Bogota Symposium Colombia opened its...world’s leading emerald experts from October 13-15. The First International Emerald Symposium was a huge...around the world taking part. More than 42 global emerald specialists from governments, labs and private...Fedesmeraldas, the Colombian Emerald Federation, and supported by all the country’s emerald-related bodies and...and the Ministry of Mines and Energy, the symposium addressed the challenges and opportunities faced by |  | | Journal (article/letter/editorial) | | Inclusions and Gemological Characteristics of Emeralds from Kamakanga, Zambia Yi Zhang and Xiao-Yan Yu...one of the world’s major emerald-producing countries. In this study, emerald samples from Kamakanga, Zambia...and fluid inclusions. The study found Kamakanga emeralds have higher RI (refractive index) and SG (specific...than average. The common inclusions in Kamakanga emeralds are pseudo-hexagonal, dark green, brownish, or...fluorapatite, tremolite, and calcite. All Kamakanga emeralds contain at least two kinds of common mineral inclusions |  | Groat, L. A., Marshall, D. D., Giuliani, G., Murphy, D. C., Piercey, S. J., Jambor, J. L., Mortensen, J. K., Ercit, T. S., Gault, R. A., Mattey, D. P., Schwarz, D., Maluski, H., Wise, M. A., Wengzynowski, W., Eaton, D. W. (2002) MINERALOGICAL AND GEOCHEMICAL STUDY OF THE REGAL RIDGE EMERALD SHOWING, SOUTHEASTERN YUKON. The Canadian Mineralogist, 40 (5) 1313-1338 doi:10.2113/gscanmin.40.5.1313 | Journal (article/letter/editorial) | | MINERALOGICAL AND GEOCHEMICAL STUDY OF THE REGAL RIDGE EMERALD SHOWING, SOUTHEASTERN YUKON LEE A. GROAT§ Department...Columbia V5A 1S6, Canada GASTON GIULIANI IRD and Centre de Recherches Pétrographiques et Géochimiques/CNRS,...Switzerland HENRI MALUSKI Laboratoire de Géochronologie, Université de Montpellier 2, Place Eugène Bataillon...discovered a major occurrence of emerald in the Finlayson Lake district of southeastern Yukon. The Regal...contact with a mid-Cretaceous granitic pluton. The emerald crystals occur where quartz veins cut mica-rich |  | | Journal (issue) | | Meetiyagoda and Balangoda, amethyst at Kekirawa and beryl at Lunugamvehera near Tanamalwila (Gunaratne and...diamonds: aa first first stage, stage, Revue Revue de de ofof GE Gemmologie AFG, AFG,138-9, 138-9,30-3 30-3...reporting reporting of of synthetic synthetic emeralds; emeralds; unusual unusual descriptions descriptions...from the the Hematita Hematita mine mine in in Brazil Brazil (AL-HEMA1), (AL-HEMA1), an an alexandrite alexandrite...Dash-double dotted green curve - Hematita mine, Brazil; 2. Dash-dotted green curve - Sri Lanka; 3. Long |  | | Journal (issue) | | gem abstracts| Margaritologia pearl newsletter|Santa Fe Symposium proceedings|Fei cui testing in Hong...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,...and 4.84 ct golden beryl. Courtesy of John Dyer Gems; composite photo by Ozzie Campos. By Vittoria L....Fritsch, University of Nantes, France; Rui Galopim de Carvalho, Portugal Gemas, Lisbon, Portugal; Lee A |  | | Journal (article/letter/editorial) | | DEPOSITA ©Springer-Verlag 1990 Origin of emerald deposits of Brazil G. Giuliani 1. 2 , L. J. H. D. Silva... Couto 4 1 2 3 4 ORSTOM, Universidade de Brasilia, Brazil c.R.P.G., 15 Rue N.D. des Pauvres, BP 20...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...bodies affected by complex folding and deformation. Emerald mineralization belongs to the classic biotite-schist |  | | Journal (issue) | | GEMOLOGICAL INSTITUTE OF AMERICA Emeralds from Northeastern Brazil Diamantine: Coated Cubic Zirconia...Points 18 pg. 3 Emeralds from the Fazenda Bonfim Region, Rio Grande do Norte, Brazil J. C. (Hanco) Zwaan...Neto, and Jan Kanis Polished emeralds from this deposit in northeastern Brazil, discovered in 2006, typically...irradiation. OVERVIEW AND UPDATE pg. 42 73 Brazil’s Emerald Industry Andy Lucas REGULAR FEATURES 31 45 47...Diamond with unusual color zoning • Large emerald with gota de aceite structure • Artificial metallic veining |  | | Report (issue) | | our way through the compet itive minefield of emerald science, much of John's contribu tion to this...opinion. extraLapis English No. 2: Emerald The Most Valuable Beryl The Most Precious Gemstone Publisher...we • pay tribute to John Sinkankas to whom this emerald issue is dedicated. John Sinkankas wrote more...than 15 books including his 1981 definitive work Emerald and Other Beryls. He set standards for authors...and hope that you will see his influence here in Emeralds of the World and in future issues. Gloria & Gunther |  | | Journal (issue) | | North-West Branch: S. Hill, FGA South Yorkshire & District Branch: J. I. Reynolds, FGA Examiners: A. J....sapphire Practical identification - Synthetic emerald and amethyst Introduction to diamond grading (of...tungsten, or by some strongly oxidizing compounds (De Beers Industrial Diamond Division: Properties of...quartz lohte Beryllonite Scapolite Labradorite Beryl Topaz Amblygonite Tourmaline Baryte Datolite Danburite...] 352 J. Gemm., 1987, 20, 6 The two-colour beryl from Orissa, India Dr R. Aliprandi, GG, FGA,* |  | | Journal (issue) | | FEATURE ARTICLES 464 Geology of Corundum and Emerald Gem Deposits: A Review Gaston Giuliani and Lee...of the geology and genesis of gem corundum and emerald deposits. p. 569 512 A Review of Analytical... 637 614 Geographic Origin Determination of Emerald Sudarat Saeseaw, Nathan D. Renfro, Aaron C. Palke...F. McClure The relative chemical diversity of emeralds from different deposits worldwide allows clear...GIA to make geographic origin conclusions for emeralds. p. 655 648 Geographic Origin Determination |  | | Journal (issue) | | Special Emerald 2018 – Issue 40 All About Colored Gemstones World Emerald Update Highlights of the...the Second World Emerald Symposium, Bogotá International Gemstone Association AColored Publication of the...Issue 40 ׀InColor 1 2 InColor ׀Special Emerald 2018 InColorMagazine.com; Gemstone.org International... Contents In Side 5 Special World Emerald Update Editor’s Note World Emerald Challenge: Origins and Appellation...Appellation 16 The Second World Emerald Symposium in Colombia The Second World Emerald Symposium Focuses on Responsible |  | | Book | | Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil Reprinted from: Minerals 2019, 9, 233, doi:10.3390/min9040233...Marshall, Anthony E. Fallick and Yannick Branquet Emerald Deposits: A Review and Enhanced Classification Reprinted...Mohamed, Supharart Sangsawong and Abeer Al-Alawi Emeralds from the Most Important Occurrences: Chemical...nondestructive methods. He is frequently visiting gem mines and pearl producing areas around the globe and often...Province (BPP) from Rio Grande do Norte in Northeast Brazil. The Boqueirao granitic pegmatite is classified |  | | Journal (article/letter/editorial) | | Maria da Glória da Silva a,b a Grupo de Metalogênese, Centro de Pesquisa em Geofísica e Geologia, Universidade...Universitário de Ondina, Sala 201-C, Salvador, 40170-290, Bahia, Brazil b Geological Survey of Brazil (CPRM)-Av...(CPRM)-Av. Pasteur, 404, Urca, Rio de Janeiro, 22290-240, Rio de Janeiro, Brazil Received 2 May 2004; accepted...equivalent units. A related subject has been discussed by De Wit et al. (1999), based on the interpretation of...(containing Amazonia, Congo, West Africa, and Rio de la Plata). A supercontinent named Columbia, which |  | | Journal (issue) | | (11) 2.16 ct demantoid, (12) 1.05 ct emerald, (13) 1.99 ct red beryl, (14) 0.72 ct ruby, (15) 1.15 ct purplepink...Karl Schmetzer Petershausen, Germany C. W. Fryer Santa Monica, California John I. Koivula Carlsbad, California...available. Or the devastation inflicted on the emerald market when the stability of new and even traditional...sources, manufacturers, and dealers alike. In light of De Beers’s recently stated shift from controlling diamond...Namibia, as well as Madagascar), South America (Brazil and Colombia), central and southern Asia (Sri Lanka |  | Giuliani, G., France-Lanord, C., Coget, P., Schwarz, D., Cheilletz, A., Branquet, Y., Giard, D., Martin-Izard, A., Alexandrov, P., Piat, D. H. (1998) Oxygen isotope systematics of emerald: relevance for its origin and geological significance. Mineralium Deposita, 33 (5) 513-519 doi:10.1007/s001260050166 | Journal (article/letter/editorial) | | Alexandrov á D. H. Piat Oxygen isotope systematics of emerald: relevance for its origin and geological signi®cance...March 1998 Abstract Oxygen isotopic composition of emerald from 62 occurrences and deposits in the world reveals...the origin of emerald from the world's most important producers. The d18Ovalue of emerald appears to be...quality from Colombia (eastern emerald zone, d18O +16.8 0.1&; western emerald zone, d18O +21.2 0.5&)...(Swat-Mingora districts, d18O +15.7 0.1&), Brazil (Santa Terezinha de GoiaÂs, d18O +12.2 0.1&; Quadrilatero |  | | Journal (issue) | | ASDI-500 Automated Diamond Spectral Inspection System | De Beers Diamond Insight Report 2022 | IIGJ-RLC Lab...Display Gem Notes Update on Emerald Mining at Campos Verdes, Goiás, Brazil | Asteriated Quartz Sphere...London Stefanos Karampelas Laboratoire Français de Gemmologie, Paris, France Alessandra Costanzo National...Fritsch University of Nantes, France Rui Galopim de Carvalho PortugalGemas Academy, Lisbon, Portugal...https://www.ssef.ch/asdi-500. NEWS AND PUBLICATIONS De Beers Diamond Insight Report 2022 The Diamond Insight |
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Emerald mines, Campos Verdes, Santa Terezinha de Goiás district, Goiás, Brazil