 | | 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 |  | 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 |  | | Journal (issue) | | London ABSTRACT: Blue euclase from Mwame, Hurungwe District, Zimbabwe, which was first collected in the late...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...Mica Fields, Hurungwe District. Mwame was formerly known as Miami, Urungwe District, Rhodesia or Southern |  | 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 |  | 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) | | and Environment, Physics and Environment, Dunarea de Jos University of Galati, 47 Domneasca Street, 800008...) Abstract: Beryl occurs in the ancient Roman mines at Wadi Nugrus, South Eastern Desert of Egypt. It...The emerald of Wadi Nugrus has similarities with the geological setting of the Canadian emeralds. Emeralds...percolation through pre-existing serpentinite and talc carbonates, metagabbros and biotite schists and...to white (goshenite), pale green to dark green (emerald, contains traces of Cr3+ and V3+ ), yellow or golden |  | | 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...isotopes Classification Exploration A B S T R A C T Emerald, the green gem variety of beryl, is the third most...year) of the world's emeralds. However there is speculation that the emerald mines in Colombia are becoming |  | | 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 (issue) | | 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...reminiscent of those seen in hydrothermally synthesised emerald (Figure 2). Subsequent enquiries to colleagues |  | | 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 |  | | 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 (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 |  | | Report (issue) | | our way through the compet itive minefield of emerald science, much of John's contribu tion to this...any other opinion. extraLapis English No. 2: Emerald The Most Valuable Beryl The Most Precious Gemstone...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) | | 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 |  | | 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 |  | | 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 |  | 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 |  | | 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) | | 180/ 60 isotopic card of natural and synthetic emeralds: geological and archeological implications G....France C. France-Lanord M. Chaussidon Natural emerald, the chromium-vanadium-rich variety of beryl, is...which concerns most of the deposits in the world. Emerald is hosted either by phlogopite schists or by plagioclasites...Brazilian deposits of Santa Terezinha de Goi~,s and Itaberai, the emerald mines of Djebels Sikait and...(Swat-Mingora) deposits, the emerald occurrence of Habachtal in Austria and the Colombian emerald deposits. Synthetic |  | de Souza, J. L., Mendes, J. C., da Silveira Bello, R. M., Svisero, D. P., Valarelli, J. V. (1992) Petrographic and microthermometrical studies of emeralds in the ‘Garimpo’ of Capoeirana, Nova Era, Minas Gerais State, Brazil. Mineralium Deposita, 27 (2) 161-168 doi:10.1007/bf00197103 | Journal (article/letter/editorial) | | studies of emeralds in the 'Garimpo' of Capoeirana, Nova Era, Minas Gerais State, Brazil J.L. de Sonza ~...Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil 2 IG, Universidade de S~o Paulo, S~o Paulo...Paulo, Brazil Received: November 29, 1990/Accepted: October 2, 1991 Abstract. Petrographic investigations...investigations in the area of the Capoeirana emerald deposit, Minas Gerais State, revealed two main lithostructural...mineralization metasedimentary-metavolcanic sequence. The emerald mineralization is dominantly concentrated within |  | | 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 |  | | Journal (issue) | | 1 . NOTES AND NEW TECHNIQUES The Santa Terezinha de Goihs Emerald Deposit 1. P. Cassedanne and D. A...s o n Editor Alice S. Kellel 1660 Stewart St. Santa Monica, C A 90404 Telephone: 12131 829-2991 Editorial...organization for the jcwelry industry, 1660 Stewart St., Santa Monica, CA 90404. Any opinions expressed in signed...was Ron Ringsrud's article "The Oil Treatment of Emeralds in Bogoth, Colombia," which was published in Fall...northwest frontier district and other Asian gem deposits. His company, TERRA, is in Santa Barbara, California |  | Aurisicchio, Carlo, Conte, Aida M., Medeghini, Laura, Ottolini, Luisa, De Vito, Caterina (2018) Major and trace element geochemistry of emerald from several deposits: Implications for genetic models and classification schemes. Ore Geology Reviews, 94. 351-366 doi:10.1016/j.oregeorev.2018.02.001 | Journal (article/letter/editorial) | | Manuscript Major and trace element geochemistry of emerald from several deposits: Implications for genetic...Conte, Laura Medeghini, Luisa Ottolini, Caterina De Vito PII: DOI: Reference: S0169-1368(17)30788-6...Medeghini, L. Ottolini, C. De Vito, Major and trace element geochemistry of emerald from several deposits:...pertain. Major and trace element geochemistry of emerald from several deposits: Implications for genetic...Contea, Laura Medeghinib, Luisa Ottolinic, Caterina De Vitob* 1 CNR – Istituto di Geoscienze e Georisorse |  | | Journal (issue) | | Dealer of Fine Gemstones, Tanzanite & Zambian Emeralds Manufacturer of Fine Sterling Jewelry 62 West...Jaipur -302001 INDIA Tel: +91.141.4057867 Email: emeralds@singhalgems.com CONTENTS 5 Foreword 14 Industry...Treatments Gemology Emeralds from the Silk Road Countries – A Comparison with Emeralds from Colombia ...Kenyan Chamber of Mines, was brutally murdered by illegal miners in the Taita Taveta District in Tsavo National...include nomenclature for lead-glass filled corundum, emerald clarity enhancement issues, Certification for Fair |  | | Journal (issue) | | Keller FEATURE ARTICLES 80 Update on Emeralds from the Sandawana Mines, Zimbabwe J.C. (Hanco) Zwaan, Jan...Bangkok, Thailand C. W. Fryer Santa Monica, California John I. Koivula Santa Monica, California Karl Schmetzer...but small, corner on the ground floor of GIA’s Santa Monica headquarters. “But,” he said, “from the quality...gemological community. Yet, while the facilities in Santa Monica were state-of-the-art when they were first...100 miles (160 km) south of GIA’s former home in Santa Monica. The spacious Carlsbad facility can comfortably |
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