 | Garnier, Virginie, Giuliani, Gaston, Maluski, Henri, Ohnenstetter, Daniel, Phan Trong, Trinh, Hoàng Quang, Vinh, Pham Van, Long, Vu Van, Tich, Schwarz, Dietmar (2002) Ar–Ar ages in phlogopites from marble-hosted ruby deposits in northern Vietnam: evidence for Cenozoic ruby formation. Chemical Geology, 188 (1) 33-49 doi:10.1016/s0009-2541(02)00063-3 | Journal (article/letter/editorial) | | phlogopites from marble-hosted ruby deposits in northern Vietnam: evidence for Cenozoic ruby formation Virginie...Giây, Hanoi, Viet nam e Vietnam National Gem and Gold Corporation, 91 Dinh Tien Hoang Street, Hanoi, Viet...Viet nam f Laboratory of Geology, Vietnam National University, 90 Nguyen Trai Road, Thanh Xuan, Hanoi...Yen and Quy Chau mining districts, in northern Vietnam. The principal results indicate the following....Phlogopite; Shear zone; Yen Bai; Luc Yen; Quy Chau; Vietnam 1. Introduction Ruby is the reddish variety of |  | | Journal (issue) | | Sapphire from Mogok, Myanmar Gemstone Mining in Vietnam Winter 2013 VOLUME 49, No. 4 EDITORIAL 187 ...formation. 223 Blue Sapphires from the Baw Mar Mine in Mogok Hpone-Phyo Kan-Nyunt, Stefanos Karampelas...223 233 Update on Gemstone Mining in Luc Yen, Vietnam Pham Van Long, Vincent Pardieu, and Gaston Giuliani...Myanmar; an update on gemstone mining in Luc Yen, Vietnam; and the characteristics of coated jadeite jade...bring our readers more of these “direct from the mine” articles, particularly from GIA’s dedicated field |  | Giuliani, Gaston, Dubessy, Jean, Banks, David, Hoàng Quang, Vinh, Lhomme, Thérèse, Pironon, Jacques, Garnier, Virginie, Phan Trong, Trinh, Pham Van, Long, Ohnenstetter, Daniel, Schwarz, Dietmar (2003) CO2–H2S–COS–S8–AlO(OH)-bearing fluid inclusions in ruby from marble-hosted deposits in Luc Yen area, North Vietnam. Chemical Geology, 194 (1) 167-185 doi:10.1016/s0009-2541(02)00276-0 | Journal (article/letter/editorial) | | marble-hosted deposits in Luc Yen area, North Vietnam Gaston Giuliani a,*, Jean Dubessy b,1, David Banks...54501 Vandœuvre, France f Vietnam National Gem and Gold Corporation, 91 Dinh Tien Hoang street, Hanoi, Viet...marble-hosted deposits in the Luc Yen mining district, North Vietnam. Raman and Infrared spectroscopy combined...an initial assemblage of anhydrite, calcite and graphite, originating from the metamorphism of organic...COS – S8 – AlO(OH) system; Evaporites; Marble; Vietnam 1. Introduction Marble-hosted deposits are the |  | | Journal (issue) | | INSTITUTE OF AMERICA Russia's Lomonosov Diamond Mine Carbonado Diamond PL Mapping of Optical Defects...article of this issue examines Russia’s Lomonosov mine, which is located in a Proterozoic zone in the Baltic... 2 EDITORIAL 143 Visit Europe’s First Diamond Mine Duncan Pay FEATURE ARTICLES 144 Geology and Development...well as the geology of the Arkhangelsk kimberlite province. 168 Carbonado Diamond: A Review of Properties...Tourmaline from Luc Yen, Vietnam Nguy Tuyet Nhung, Le Thi Thu Huong, Nguyen Thi Minh Thuyet, Tobias Häger |  | | Journal (issue) | | Colouration of Aquamarine and Yellow Beryl Pyrope from Vietnam Multicoloured Quartz from Brazil A 42.54 ct Historical...Pyrope from Southeast Vietnam 773 By Le Ngoc Nang, Pham Trung Hieu and Pham Minh Tien Characteristics of...Bystrite in a Mogok Ruby | Topaz from Thanh Hoa, Vietnam | Traceability and Sustainability of Precious Coral...Green orthoclase from granitic pegmatites in Minh Tien, Vietnam, very rarely shows chatoyancy or weak asterism...a transparent green orthoclase from Luc Yen in Vietnam. Gemologický spravodajca, 10(2), 5–11. Henn, U |  | | Journal (issue) | | ISSN: 1355^1565 129 Gem corundum deposits in Vietnam Pham Van Long1, Hoang Quang Vinh2, Virginie Gamier3...Trinh2 1. Vietnam National Gem and Gold Corporation, 91 Dinh Tien Hoang Street, Hanoi, Vietnam 2. Institute...Geological Sciences, CNST, Nghia Dô, Câu Giây, Hanoi, Vietnam 3. CRPG/CNRS, UPR 2300, BP 20, 54501 Vandœuvre...Luc Yen and Quy Chau mining areas in northern Vietnam. Since 1991, 'basaltic'-type blue-green-yellow...('BGY') sapphires have been mined in southern Vietnam. This article briefly reviews the history and geology |  | | Journal (issue) | | Diffusion Treatment of Spinel Gem-Quality Augite from Vietnam Color Origin of Brown Mammoth Ivory Vibrant Colors...Gem-Quality Augite from Dong Nai, Vietnam Le Ngoc Nang, Lam Vinh Phat, Pham Minh Tien, Pham Trung Hieu, Kenta Kawaguchi...Kawaguchi, and Pham Minh Offers a comprehensive look at a variety of augite from Dong Nai, Vietnam, detailing...“Snail” in diamond • Metal sulfide(?) in garnet • Graphite inclusion in pink sapphire • Night sky in yellow...in natural spinel, a recent source of augite in Vietnam, and research identifying the origin of the surface |  | | Journal (issue) | | deposit of An Phu, Luc Yen Mining District, Yenbai Province, Vietnam . . . . . . . . . . . . . 225 by...crystal cluster on matrix, 6 cm tall, from the Tsumeb mine, Tsumeb, Namibia. Sandor Fuss collection (2004)...discovered on the 12th level of the Cresson mine, Cripple Creek district, Colorado in 1914 (see “The Cresson...Mineralogical Record, volume 37, May–June, 2006 Cresson mine manager Dick Roelofs showing the Cresson Vug to...school; he did his Master’s work at the Rueppele iron mine in Stanton, Missouri. He spent the years 1931–1932 |  | Garnier, Virginie, Giuliani, Gaston, Ohnenstetter, Daniel, Fallick, Anthony E., Dubessy, Jean, Banks, David, Vinh, Hoàng Quang, Lhomme, Thérèse, Maluski, Henri, Pêcher, Arnaud, Bakhsh, Kausar Allah, Long, Pham Van, Trinh, Phan Trong, Schwarz, Dietmar (2008) Marble-hosted ruby deposits from Central and Southeast Asia: Towards a new genetic model. Ore Geology Reviews, 34 (1) 169-191 doi:10.1016/j.oregeorev.2008.03.003 | Journal (article/letter/editorial) | | Geological Sciences, CNST, Nghia Dô, Câu Giây, Hanoi, Vietnam g Laboratoire de Géochronologie, Université de...Pakistan j Vietnam National Gem and Gold Corporation, 91 Dinh Tien Hoang street, Hanoi, Vietnam k Gübelin...tectonics that were active, from Afghanistan to Vietnam, between the Oligocene and the Pliocene. The petrography...for the deposits of Jegdalek, Hunza and northern Vietnam. Whole rock analyses of non-ruby-bearing marbles...externally-derived fluids. The carbon isotopic composition of graphite in marbles reveals that it is of organic origin |  | Duong, Van-Hao, Trinh, Phan Trong, Nguyen, Thanh-Duong, Piestrzyski, Adam, Nguyen, Dinh Chau, Pieczonka, Jadwiga, Ngo, Xuan Dac, Tran Van, Phong, Thai Pham, Binh, Nguyen-Van, Huong, Ngo Van, Liem, Tien Bui, Dieu, Vu Khac, Dang, Bui, Chi Tien (2021) Cu-Au mineralization of the Sin Quyen deposit in north Vietnam: A product of Cenozoic left-lateral movement along the Red River shear zone. Ore Geology Reviews, 132. 104065pp. doi:10.1016/j.oregeorev.2021.104065 | Journal (article/letter/editorial) | | mineralization of the Sin Quyen deposit in north Vietnam: A product of Cenozoic left-lateral movement along...Nguyen-Van g, Liem Ngo Van g, Dieu Tien Bui h, Dang Vu Khac i, Chi Tien Bui j a Hanoi University of Mining...Hanoi, Viet Nam Institute of Geological Sciences, Vietnam Academy of Science and Technology, Hanoi, Viet...Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Viet...100000, Viet Nam g VNU University of Science, Vietnam National University, Hanoi, Viet Nam h GIS Group |  | Giuliani, Gaston, Dubessy, Jean, Ohnenstetter, Daniel, Banks, David, Branquet, Yannick, Feneyrol, Julien, Fallick, Anthony E., Martelat, Jean-Emmanuel (2018) The role of evaporites in the formation of gems during metamorphism of carbonate platforms: a review. Mineralium Deposita, 53 (1) 1-20 doi:10.1007/s00126-017-0738-4 | Journal (article/letter/editorial) | | phlogopite in a marble matrix, Minh Tien mine, Luc Yen mining district, Vietnam, 2 × 1 cm. e Nodule, rough...cut of tsavorite from the Tsavolite mine, Mangare mining district, Voi region, Kenya, diametre of the...mines, Arusha district, Tanzania. h Blue zoisite, variety tanzanite, Merelani, Arusha district, Tanzania...or lenses; p: calc-silicate rocks; q: kyanite-graphite gneiss; r: dolomitic marble with anhydrite levels...residues of dust not cleaned by the water jet in the mine. Photos b to d: Y. Branquet and Photo e: G. Giuliani |  | | Journal (issue) | | Aquamarine with Spodumene Inclusions from the Oceanview Mine, California, USA | Demantoid/ Andradite Slices from...Chatoyancy from Vietnam | Faceted Proustite from Chañarcillo, Chile | Blue Spinel Mining in Vietnam Cover photo:...Photo by Jeff Scovil 206 Excursions Luc Yen, Vietnam Gem-A Notices 214 Learning Opportunities 216...‘Home Gemmology’, ‘Jewellery Industry Voices’ and ‘Mine to Design’. • Gem-A (London) has produced a series...the Oceanview Mine, California, USA Since 2000, mining operations at the Oceanview mine in Pala, San Diego |  | | Journal (issue) | | Chinese Synthetic Diamonds Trapiche Rubies from Vietnam Renaissance Recipes for Artificial Pearls Volume...Ruby from Khoan Thong, Luc Yen Mining District, Northern Vietnam 726 By Isabella Pignatelli, Gaston...an existing deposit such as those in the Karoi District or the Zambezi Valley (cf. www.mindat.org/ locentries...cobaltoan calcite from Switzerland—marketed as ‘Rose of Mine’—in his handmade jewellery creations (e.g. Figure...dramatically with a large find from the Confianza mine near Tilama, Valparaiso, Chile, in 2004 (Koivula |  | | Journal (issue) | | the Tan Huong–Truc Lau Area, Yen Bai Province, Northern Vietnam Nguyen Ngoc Khoi, Chakkaphan Sutthirat...Nguyen Thi Minh Thuyet, and Nguy Tuyet Nhung Although not as well known as the Luc Yen district, this area...Afghanistan • Ammonite from Madagascar • Aquamarine from Vietnam • Chalcedony from Peru • Afghan emerald mining...characteristics of r uby and sapphire from Yen Ba i Province, in nor thern V ietnam. There is an ar ticle by...THE TAN HUONG–TRUC LAU AREA, YEN BAI PROVINCE, NORTHERN VIETNAM Nguyen Ngoc Khoi, Chakkaphan Sutthirat |  | | Journal (issue) | | Afghan beryls from pegmatites at Ghursalak in Konar Province (aquamarine, morganite) and from the Panjshir...the Nilaw, Mawi and Kurghal regions of Laghman Province from cavities in pegmatite veins (Figure 1). ...Beryl samples from pegmatites of Ghursalak (Konar Province) and Panjshir Valley in NE Afghanistan were provided...of emerald occur in the Panjshir Valley (Kapisa Province). The Nilaw-Kolum Pegmatite Field (35°12' N and...the range 5-75º 2Θ, applying CuKα radiation, a graphite monochromator, voltage 35 kV, lamp current 30 |  | Giuliani, Gaston, Groat, Lee, Fallick, Anthony, Pignatelli, Isabella, Pardieu, Vincent (2020) Ruby Deposits: A Review and Geological Classification. Minerals, 10 (7) 597 doi:10.3390/min10070597 | Journal (article/letter/editorial) | | unheated rubies from the recently discovered Didy mine in Madagascar also command high prices [19]. A set...Minéral; (C) rubies from the Montepuez mine, from the Montepuez mine, Mozambique. Vincent Pardieu © Gemmological...(9) Kitui; Mangare (Rockland-formerly John Saul mine; Penny Lane; Aqua, Hard Rock). Tanzania: (10) Umba...Umba (9) Mangare (Rockland-formerly John Saul mine; Penny Lane; Aqua, Hard Rock). Tanzania: (10) Umba...(Fiskenæsset district(25) Revelstoke. Greenland: (26) South of Nuuk region (Fiskenæsset district-Aappaluttoq); |  | | Journal (issue) | | Napoleon III’s Crown A New Source of Amber in Vietnam Summer 2022 VOLUME 58, No. 2 EDITORIAL 137 ...Ekanite from Sri Lanka, a New Amber Source in Vietnam, and More... Duncan Pay FEATURE ARTICLES 138 ...Amber from Phu Quoc, Vietnam Le Ngoc Nang, Pham Trung Hieu, Lam Vinh Phat, Pham Minh Tien, Ho Nguyen Tri Man...from Canadian nephrite jade from the Polar Jade mine in northwest British Columbia. The measurement of...Ekanite from Sri Lanka, a New Amber Source in Vietnam, and More... Welcome to the Summer issue of Gems |  | | Journal (issue) | | 90 Play-of-Color Opal from Wegel Tena, Wollo Province, Ethiopia Benjamin Rondeau, Emmanuel Fritsch,...Update on ruby, sapphire, and spinel mining in Vietnam • Sphene from northern Pakistan • Spinel from Bawma...the proximity to San Diego’s historic pegmatite district, we will offer field trips to working gem mines...purchased the diamond in India, possibly at the Kollur mine, but its exact source is not known. Louis XIV had...exact source in India is unknown, though the Kollur mine has been mentioned (e.g., Balfour, 2009). The stone |  | | Journal (issue) | | Aquamarine from the Thuong Xuan District, Thanh Hoa Province, Vietnam Le Thi-Thu Huong, Wolfgang Hofmeister...quartz • Indian scapolite • Spinel from northern Vietnam • Gem zektzerite • “Coral Sea” agate • Dendritic...& GEMOLOGY SPRING 2011 3 NOSY BE 4 km 0 N MINE AREA Ambato MADAGASCAR LLIN S TA C RY TA R Y...mb an ja ~1 0k m n Demantoid Antetezambato mine Figure 2. The Antetezambato garnet deposit is located...heat-treated at temperatures of 640–720°C in a graphite-powder reducing atmosphere to enhance their color |  | | Journal (issue) | | Tourmaline The New Rising Star Mining in Luc Yen, Vietnam Tsavorite, Five Decades Later Human Elements in...offering courses in gem trading and educational mine tours that are open to everyone. Consumers are becoming...which includes two washplants, security set-up, mine camps and other related infrastructure. The company...and successfully building the world’s largest ruby mine in Mozambique. Dev Shetty, Fura’s president and...Diamonds Tender began in 1984. Rio Tinto’s Argyle mine is the world’s only source of these highly coveted |  | | Show/Event (guide) | | zone assemblage from the Allah Cooper/Valcooper mine, Louisa County, Virginia. L. E. Kearns & M. D. Dunn...collecting. With a vast array of abandoned underground mine openings available, searching for specimens became...fit in? The mine openings were short lived. The State was slowing capping all known open mine shafts and...where her father was an electrician in a uranium mine. Encouraged by cold and desolate winters, the family...of wulfenite with mimetite from the San Francisco mine that couldn't possibly be natural, but was, and |  | | Journal (issue) | | ARTICLES 2 Blue Spinel from the Luc Yen District of Vietnam Boris Chauviré, Benjamin Rondeau, Emmanuel...increasingly popular vivid blue spinel from northeast Vietnam. 18 The Chinese Soul in Contemporary Jewelry...gemological characteristics of blue spinel from Luc Yen, Vietnam. The centerpiece of the 18k yellow gold ring from...olivine in marble matrix was seen at a mine in the Luc Yen district. Photo by Vincent Pardieu/GIA. Composite...of the vivid blue spinel from Luc Yen, northern Vietnam, which owes its remarkable color to traces of cobalt |  | | Catalog/List | | 10:00 AM – 5:00 PM CT Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Session...5:00 PM ET LOT VIEWING Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Thursday...grow. 73001 TOURMALINE Momeik Township, Kyaukme District, Shan State, Myanmar (Burma) Looking almost like...com/6150 73002 TOURMALINE Momeik Township, Kyaukme District, Shan State, Myanmar (Burma) For those that have...750 73003 TOURMALINE Momeik Township, Kyaukme District, Shan State, Myanmar (Burma) As if Momeik doesn’t |  | | Journal (issue) | | moving products from mine to consumer. The main cover image was taken at the AnahÌ mine in Bolivia, a major...instrumentation such as LA-ICPMS—once primarily the province of academia—became a fixture in many gemological...were combined under the jurisdiction of the U.S. District Court of New Jersey 168 PRODUCTION AND MARKETS...of the company (Even-Zohar, 2007). Because of the mine closures, De Beers’s market share by volume fell...pink diamonds (0.51 and 0.55 ct) from the Argyle mine in Australia were part of the 2007 Argyle pink diamonds |  | | Journal (issue) | | Synthetic Emeralds A New Source of Danburite from Vietnam A Chart of Emerald Inclusions Winter 2016 VOLUME...Find of Danburite in the Luc Yen Mining Area, Vietnam Le Thi-Thu Huong, Laura M. Otter, Tobias Häger...find of gem-quality danburite from Yen Bai Province, Vietnam. Our fourth article returns to the emerald...stone picture. Gemfields’ auctions from its Kagem mine have had a profound effect on the city’s emerald...demand 332 GEMS & GEMOLOGY n the colored gemstone mine-to-market journey, there are major trading centers |
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