 | | Journal (issue) | | Number 2 TABLE OF CONTENTS FEATURE ARTICLES 62 Sri Lanka: The Gem Island Peter C. Zwnan The Identification...a n y fine gemstones found on the island o f Sri Lanka, the subject of Peter Zwaan's article i n this...this issue. This fine 9.57-ct cabochon from Sri Lanka is pictured here against a 19th century lithograph...in natural stones such a s ruby. emerald. and sapphire. selling points of gemstones and how to separate...Flux Ruby Synthetic Flame Corundum Natural Blue Sapphire Opal and Synthetic Opal Diamond Simulants Green |  | | Journal (issue) | | JOURNAL OF THE GEMOLOGICAL INSTITUTE OF AMERICA Sri Lanka: Where Tradition and Technology Meet Characteristics...Tomorrow 173 Duncan Pay FEATURE ARTICLES 174 Sri Lanka: Expedition to the Island of Jewels Andrew Lucas...Pedro Padua pg. 175 Offers a firsthand look at Sri Lanka’s mining, cutting, jewelry manufacturing, and...colored stones. 228 Nephrite Jade from Guangxi Province, China Zuowei Yin, Cui Jiang, M. Santosh, Quanli...article in this issue examines the revitalization of Sri Lanka’s gem and jewelry industry, achieved by combining |  | | Journal (issue) | | Tourmaline Species Age Dating of Zircon Inclusions in Sapphire Ethiopia Field Report 2019 Tucson Report Spring...55, No. 1 EDITORIAL 1 Studies on Tourmaline, Sapphire, Cultured Pearl, and a Reliquary of Legend… Duncan...Zircon Inclusions in Sapphires from Ratnapura and Balangoda (Sri Lanka) and Implications for Geographic...André Paul Establishes a metamorphic origin for sapphire samples from these deposits, supported by their...and Kevin Schumacher Documents a visit to the sapphire, opal, and emerald mining and trading areas of |  | Filina, Maria I., Sorokina, Elena S., Botcharnikov, Roman, Karampelas, Stefanos, Rassomakhin, Mikhail A., Kononkova, Natalia N., Nikolaev, Anatoly G., Berndt, Jasper, Hofmeister, Wolfgang (2019) Corundum Anorthosites-Kyshtymites from the South Urals, Russia: A Combined Mineralogical, Geochemical, and U-Pb Zircon Geochronological Study. Minerals, 9 (4) 234 doi:10.3390/min9040234 | Journal (article/letter/editorial) | | Abstract: Kyshtymites are the unique corundum-blue sapphire-bearing variety of anorthosites of debatable geological...Russia. Their mineral association includes corundum-sapphire, plagioclase (An61–93 ), muscovite, clinochlore...cannot provide an unambiguous determination of sapphire origin. If it is true and zircons can be used...event at 290–330 Ma as recorded in zircon and sapphire zoning. On the other hand, Ti-in-zircon thermometer...are required. Keywords: blue sapphire; anorthosites; kyshtymites; sapphire geochemistry; IlmenogorskyVishnevogorsky |  | Peucat, J.J., Ruffault, P., Fritsch, E., Bouhnik-Le Coz, M., Simonet, C., Lasnier, B. (2007) Ga/Mg ratio as a new geochemical tool to differentiate magmatic from metamorphic blue sapphires. Lithos, 98 (1) 261-274 doi:10.1016/j.lithos.2007.05.001 | Journal (article/letter/editorial) | | pastel) and in metamorphic terrains (e.g. Mogok, Sri Lanka, Ilakaka) are characterized by low average iron...(Cambodia) 12 — Ilakaka (S Madagascar) 13 — Ratnapura, Balangoda (Sri Lanka) 14 — Mogok (Myanmar) Metasomatic blue...al. / Lithos 98 (2007) 261–274 Magmatic blue sapphire from alkali basalts 1 — Pailin (Cambodia) 2 —...(Cambodia) 12 — Ilakaka (S Madagascar) 13 — Ratnapura, Balangoda (Sri Lanka) 14 — Mogok (Myanmar) Metasomatic blue...al. / Lithos 98 (2007) 261–274 Magmatic blue sapphire from alkali basalts 1 — Pailin (Cambodia) 1.4 |  | | Journal (article/letter/editorial) | | ratios to gem exploration in the granulite belt of Sri Lanka S.J.K. Gamage a, M.S. Rupasinghea and C.B. Dissanayake...Road, Kandy, Sri Lanka bDepartrnent of Geology, University of Peradeniya, Peradeniya, Sri Lanka (Received...ratios to gem exploration in the granulite belt of Sri Lanka. J. Geochem. Explor., 43:281-292. The geochemical...and strontium in the central granulite belt of Sri Lanka, where many of the gem deposits are found, was...exploration. INTRODUCTION The gem minerals of Sri Lanka have attracted the attention of mineralogists |  | | Book | | Sri Lanka's mineral resources can enrich country's coffers Prashan Francis B.Sc. Special (Geo.,SL)...Gem &Jewellery Research & Training Institute, Sri Lanka (Ministry of Mahaweli Development and Environment)...Jewellery Research & Training Institute, Sri Lanka 2018 Sri Lanka's mineral resources can enrich country's...Gem & Jewellery Research & Training Institute, Sri Lanka All rights reserved. No part of this publication...Sutharshan 2018. ISBN 978-955-8382-04-2 Preface Sri Lanka is gifted with many varieties of high quality |  | | Journal (issue) | | 479-82, 486, 489, 49-9 Hughes, R.W., 1997. Ruby and sapphire. RWH publishing, Boulder, Colorado, USA. pp. 168-92...Chatham flux grown synthetic orange sapphire and synthetic blue sapphire. Gems & Gemology, 18(3), 140-53...Scarratt, K., 1999. The identification of ruby and sapphire. Gems & Gemology, 35(4) 82-3 Themelis, T., 1992...1992. The heat treatment of ruby and sapphire. Gemlab Inc., U.S.A. p p 108-10 Webster, R., 1994. Gems,...management in Sri Lanka P.G.R. Dharmaratne National Gem and Jewellery Authority, Colombo 3, Sri Lanka ABSTRACT: |  | | Book | | extensive native plantations in the Northern Province, especially in the Jaffna Peninsula and the outlying...and December, the rainy season of the Northern Province. Sugar or “jaggery ” is prepared from sweet toddy...stone inthe Western Province, or of tamarind wood in the North-Central Province; in this a heavy pesile...to one family of ivory workers in the Kegalla District. The little figures of the last King of Kandy...Chief Priest are said to be contemporary portraits. Sri Wikrama Raja Sinha was the last king of the Suluwansa |  | | Journal (issue) | | (7) 2.14 ct blue sapphire, (8) 23.18 ct blue spinel, (9) 4.82 ct purple sapphire, (10) 5.32 ct Paraíba...1.15 ct purplepink sapphire, (16) 5.54 ct spessartine, (17) 8.04 ct orange sapphire, and (18) 3.48 ct...(Brazil and Colombia), central and southern Asia (Sri Lanka, India, Afghanistan, Pakistan, Russia, and China)... alexandrite and other chrysoberyls, ruby and sapphire, diamond, garnet, jade [both jadeite and nephrite]...come from a number of sources, but predominantly Sri Lanka. Accented with smaller diamonds, the 129 gem corundums |  | | Journal (issue) | | Argyle, courtesy of Rio Tinto; (4) an 11.16 ct sapphire from Madagascar, GIA Collection no. 31618; (5)...fields. Likewise, beryllium diffusion of ruby and sapphire brought together geologists, gemologists, and...instrumentation such as LA-ICPMS—once primarily the province of academia—became a fixture in many gemological...exports from Myanmar disrupted supply channels for sapphire and ruby. And the proliferation of new sales avenues...were combined under the jurisdiction of the U.S. District Court of New Jersey 168 PRODUCTION AND MARKETS |  | | Journal (issue) | | ISSN: 0022-1252 J. Gemm., 1992, 23, 1 20 The Sri Lankan ruby: ruby: fact fact or orfable? fable? Ai...Aiahroof M.M.M. Mahroof Colombo, Colombo, Sri Sri Lanka Lanka Sri Lanka, or Ceylon as it was called until 1972...this was the effect of Devanmpiya Tissa's merit. Sapphire, beryl, ruby, these gems and many jewels and those...a hiatus in the Sri Lankan gem story. As I have written elsewhere: 'While Sri Lanka has had a good press...among those who had written, often admiringly, of Sri Lankan text writers writers like like Herbert Herbert |  | | Journal (issue) | | (including alexandrite), corundum (ruby, blue sapphire and synthetic colour-change corundum), diamond...gia.edu/gia-news-researchnigerian-source-blue-sapphire. Goldsmiths’ Review 2013/2014 In July 2014, The...supplier, the fluorite was mined from Cao Bang Province, northeast of Yen Bai. The crystal surfaces were...29.05 ct fluorite is reportedly from Cao Bang Province in northern Vietnam. Photo by Bilal Mahmood. ...yellow-green grossular from Kambanga, Taita-Taveta District, Voi, Kenya, is notable for having a significantly |  | | Book | | Enterprise as carried on, chiefiy in the Sabaragamuwa district; to the splendid opportunity presented for...round off the list of precious things for which Lanka and Serendib have been famous from time immemorial...Ceylon 64, 106 Baker, Sir S., on ... 31, 128, 139 Balangoda Beligal Korale 18, 24, 26, 33 ... Belihuloy a...Garnet. 29, 30, 97, 125, 141 Gem Searching in Sabaragamuwa. Ill, 119 Gems in Ceylon ...12, 26, 59, 67,...Ramboda ... ... ... ... 140 Rangala ... .2, 31, 104 Ratnapura 7, 28, 45, 59, 106, 128. 140 Report on Gold in |  | Voudouris, Panagiotis, Mavrogonatos, Constantinos, Graham, Ian, Giuliani, Gaston, Melfos, Vasilios, Karampelas, Stefanos, Karantoni, Vilelmini, Wang, Kandy, Tarantola, Alexandre, Zaw, Khin, Meffre, Sebastien, Klemme, Stephan, Berndt, Jasper, Heidrich, Stefanie, Zaccarini, Federica, Fallick, Anthony, Tsortanidis, Maria, Lampridis, Andreas (2019) Gem Corundum Deposits of Greece: Geology, Mineralogy and Genesis. Minerals, 9 (1) 49 doi:10.3390/min9010049 | Journal (article/letter/editorial) | | tectono-metamorphic units. In the Xanthi area, the sapphire (pink, blue to purple) deposits are stratiform...blue sapphires, 4777 for purple and 3301 for pink sapphire from Naxos plumasite, and finally 4677 to 1532...respectively δ18 O of 4.9 ± 0.2‰ for sapphire in plumasite, 20.5‰ for sapphire in marble and 1‰ for ruby in mafics...gemstones. Keywords: corundum megacrysts; ruby; sapphire; plumasite; metamorphic-metasomatic origin; Greece...Ma) [2,4–10]. Magmatic and metamorphic ruby and sapphire deposits related to the Pan-African orogeny are |  | | Book | | notable example in this category is the Nuristan District of Afghanistan, which over the past 10 years has...Saijo, Iyo Province, Ehime Prefecture, Island of Shikoku Ashio Mine, Shimotsuke Province, Tochigi Prefecture...Arakawa Mines, Ugo Province, Akita Prefecture, Honshu The Obira Mine, Bungo Province, Oita Prefecture,... Hyuga Province, Miyazaki Prefecture, Kyushu Otome Mine, Suisho Pass, Kurobera, Kai Province, Yamanashi...Prefecture, Honshu Mino Province, Gifu Prefecture, Honshu; and Omi Province, Shiga Prefecture, Honshu |  | | Journal (issue) | | Spinels of Mogok – A Brief Overview Spinels from Sri Lanka 54 The Spinels of Mahenge, Tanzania In Search...Responsibility 94 Book Review Discovering the Gems of Sri Lanka 98 100 108 113 Members 14 Saurabh Bansal Damien...Shirley Xue Li Zhang, Hong Kong E. Gamini Zoysa, Sri Lanka Advisors Jean Claude Michelou, Colombia Ruben...include the colored gemstones ruby, emerald, and sapphire. This paved the way for Greenland Ruby to join...Greenland Ruby’s mine produces both ruby and pink sapphire. “We’re delighted to begin the process of becoming |  | | Journal (issue) | | Gemesis CVD synthetic diamond New sapphires from Sri Lanka Cultured pearls from Micronesia VOLUME 48 NO...Sapphires from Thammannawa, Kataragama Area, Sri Lanka Pannipitiye G. R. Dharmaratne, H. M. Ranjith Premasiri...the object of a recent gem rush in southeastern Sri Lanka, possess good transparency and a pure blue color...cultured pearls with drilled beads • Ruby and sapphire rush near Didy, Madagascar • Beryllium-bearing...untreated Madagascar sapphire • Blue sapphire discovery near Kataragama, Sri Lanka • Sapphire and ruby carvings |  | | Journal (issue) | | 1983); therefore, in spite of of its better from Sri Lanka, show X-ray diffraction diffraction data which...reliableidentificaidentification.localities in Sri Lanka, and also from at least one diffraction seems...tion. locality in Burma (Spengler, 1983). In Sri Lanka refractive a zincian variety with relatively high...1 'taaffeite' and whose origin was thought to be Sri Around of about This stone is rather (0.30ct in red...weight was sold as c'red taaffeite' to Dr Dr E. Lanka. This rather small (0.30ct weight) and its colour |  | | Journal (article/letter/editorial) | | found in metamorphic rocks, most occurrences of sapphire are connected with igneous intrusions. PREVIOUS...collected from the Haputale escarpment near the Balangoda-Haputale road. The corundum here was in tabular...of gems found in alluvial deposits of the Ratnapura district now runs to several million pounds, it is...discovering a new corundum locality where gem-quality sapphire has developed along the contact of a syenite intrusion...crystals with the familiar barrel shape. (b) The Sapphire-bearing Syenite-limestone Contact. A petrological |  | | Book | | Blue = sapphire All other colours are termed sapphire with the colour prefix (e.g. yellow sapphire) Phenomena:...o-ray = purplish red; e-ray = orangy red Blue sapphire: o-ray = violetish blue; e-ray = greenish blue...nm, and general absorption of the violet Blue sapphire (Fe + Ti) = Three lines at 451.5 (strongest),...to strong red (long wave and short wave) Blue sapphire = various reactions (see text) Natural inclusions:... Major sources: Burma, Thailand, Cambodia, Sri Lanka, India, Australia, Kenya, Tanzania, Montana and |  | | Journal (issue) | | occur in the John Saul ruby mine, Taita-Taveta District, Kenya (Simonet, 2000) which is located just north...change to green by heating of red corundum from Sri Lanka, and reversion to red by cooling. Thermochromy...colouring Easter eggs. I b A certain orange-yellow sapphire placed on top of a green UE tourmaline turns deep...with a Chelsea filter. Placing the orange-yellow sapphire on top of a green UE tourmaline also results in...of four green tourmalines from the Taita-Taveta District, Kenya. For the present study, the contents of |  | | Journal (issue) | | TECHNIQUES 159 Inclusions in Taaffeites from Sri Lanka , Mahinda Gunawardene 163 ~ a ~ n e tProperties...NEW TECHNIQUES INCLUSIONS IN TAAFFEITES FROM SRI LANKA By M a h j n d a G u n a w a r d e n e This article...mineralogical study of inclusions i n taaffeites from Sri Lanka, with photomicrographs of some of the most characteristic...genesis of taaffeite is discussed. Taaffeitesirom Sri Lanka, China, the USSR, Australia, and even Burma have...reported is believed to be of Ceylon (now called Sri Lanka] origin (Anderson et al., 1951; Anderson, 1968) |  | Harris, Stephen J., Graham, Ian T., Lay, Angela, Powell, William, Belousova, Elena, Zappettini, Eduardo (2017) Trace Element Geochemistry and Metasomatic Origin of Alluvial Sapphires From the Orosmayo Region, Jujuy Province, Northwest Argentina. The Canadian Mineralogist, 55 (4) 595-617 doi:10.3749/canmin.1700015 | Journal (article/letter/editorial) | | ALLUVIAL SAPPHIRES FROM THE OROSMAYO REGION, JUJUY PROVINCE, NORTHWEST ARGENTINA STEPHEN J. HARRIS, IAN T...alluvial sapphires from the Orosmayo region, Jujuy Province, northwest Argentina. In situ laser ablation inductively...other evidence surfaces, a working hypothesis for sapphire genesis involves a three-stage process, including:...large trace element variation within individual sapphire grains identified in this work also highlights...CANADIAN MINERALOGIST INTRODUCTION Gem corundum (sapphire and ruby) is of great scientific and economic interest |  | | Journal (issue) | | Prospectors' Guide Map to the Gem Deposits of Sri Lanka C. B. Dissanayuke and M.S . Rupasinghe Two Treated-Color...Fall 1993 LETTER L L L L L BLUE COLOR IN SAPPHIRE CAUSED BY FE^/FE^ INTERVALENCE CHARGE TRANSFER...TRANSFER It is widely accepted that the blue color in sapphire is due to Fe^'/Ti4'charge transfer, often accompanied...Fep/Fe~TVCT to the color of sapphire has not been established, since no sapphire has been reported in which...Fe2*/Fe3' IVCT alone can produce a blue color in sapphire. The two grayish blue sapphires examined are 1 |
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Aluthnuwara, Balangoda, Ratnapura District, Sabaragamuwa Province, Sri Lanka