 | | Journal (article/letter/editorial) | | apatite (assumedly, as opposed to tourmaline or beryl). Some of the apatite was again found to be marketed...are known from the Rubikon mine in the Karibib district of the Erongo region. The GIA collection has two...cat’s-eye, from left 11.40, 8.02, and 9.60 carats, Sri Lanka, India, and Myanmar (Burma). No polarizer. GIA...greenish-yellow—coming from Mwami in the Karoi (Urungwe) district of Mashonaland West. Asia India Although transparent...carats and 10.51 carats, Mwami, Karoi (Urungwe) district, Mashonaland West, Zimbabwe. GIA Gübelin collection; |  | | Journal (article/letter/editorial) | | of Beryllium and Fluorine in the Gem Fields of Sri Lanka M. S. Rupasinghe 1, A. Banerjee 1, j. Pense 1...Peradeniya, Sri Lanka Abstract. A study of the abundance of Be in the gem sediments of Sri Lanka shows that...pegmatites of the Highland and Southwest Groups of Sri Lanka, very little decomposition of the Be-bearing minerals...particularly beryl and chrysoberyl. The beryllian granites and pegmatites of the Precambrian of Sri Lanka are...rocks abundant in the main gem bearing areas of Sri Lanka. Fluorine is found in the range of 400-2,000 ppm |  | | Journal (article/letter/editorial) | | BEDS OF SRI LANKA NAWARATNE Department of Geology,Universityof Peradeniya,Peradeniya,Sri Lanka Even...Even thoughthe occurrenceof gold in Sri Lanka has been mentioned in chronicles of historical im- portance...confirmedby the officersof the Mineral Surveyin the Sabaragamuwa, centraland western provinces(Ceylon Administration...p. 57), showsthe known occurrences of gold in Sri Lanka. The area under considerationis a very rugged...mountainous regionin the southeastern part of Ratnapura (Fig. 1). Figure 2 showsthe detailedgeology of |  | | 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...not of the publishers. SRI LANKA: THE GEM ISLAND By Peter C. Zwaan Sri Lanka, formerly Ceylon, remains...mined by primitive methods. In many instances, the Sri Lankan origin of the gemstone can be determined by |  | | 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) | | demantoid, (12) 1.05 ct emerald, (13) 1.99 ct red beryl, (14) 0.72 ct ruby, (15) 1.15 ct purplepink sapphire...(Brazil and Colombia), central and southern Asia (Sri Lanka, India, Afghanistan, Pakistan, Russia, and China)...come from a number of sources, but predominantly Sri Lanka. Accented with smaller diamonds, the 129 gem corundums...feldspar, iolite, lapis lazuli, maw sit sit, red beryl, rhodochrosite, rhodonite, scapolite, sphene, spodumene...by Robert Weldon. 294 Localities of the 1990s BERYL Emerald. Colombia still reigned throughout the 1990s |  | | Journal (issue) | | Zircon Inclusions in Sapphires from Ratnapura and Balangoda (Sri Lanka) and Implications for Geographic...Argentina • “Double bubble” multiphase inclusion in beryl • Native copper inclusions in Indonesian purple...more about the age and origin of sapphires from two Sri Lankan alluvial deposits. Next, a team headed by...the 2017 news of sapphires from northern Tigray Province, prompted a 2018 GIA field expedition. Led by...minerals of the Southern California pegmatite province. Rocks & Minerals, Vol. 86, No. 1, pp. 14–35, |  | | 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 |  | | Book | | Edelseifen um Ratnapura . . . . . . . . . . 22 Lageskizze der Edelsteinfelder in der Provinz Sabaragamuwa Ceylons...Sternrubin (66) Erkennungsmerkmale (66). 60 61 7 Beryl/. .... . . . . . .. . .. . . Aquamarin (70)-Gelber...Polonnaruwa • Kandy Nuwara Eliya Adam's Peak Ratnapura • .Pelmadulla • Rakwana Malara Karte von Ceylon...altorientalisches Dichterwort die paradiesische Insel Lanka an der Siidspitze Indiens. Es hat bis heute seine...von Edelsteinen wie gerade Ceylon.Bereits in den Lanka-Sagen finden sich manche Hinweise auf Ceylons Edelsteinreichtum |  | | Journal (issue) | | 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...addition to the traditional spinel sources of Sri Lanka, Pakistan, and Myanmar (spinel, if polished elsewhere...start operations at the Kagem mine in the Kafubu District, historically Zambia’s largest source of emeralds...ultimately decided in eBay’s favor when the U.S. District Court of New York determined that the burden of |  | | Journal (issue) | | gem variety. As of September 2014, these include beryl (emerald), chrysoberyl (including alexandrite),...informal market on the road leading to the Spitzkoppe beryl and topaz area in west-central Namibia. At first...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 |  | | Journal (issue) | | structures can occur in many natural gemstones (such as beryl, diamond, garnet, spodumene and topaz). They are...management in Sri Lanka P.G.R. Dharmaratne National Gem and Jewellery Authority, Colombo 3, Sri Lanka ABSTRACT:...accessing alluvial gem gravels (known as illama) in Sri Lanka for the extraction of gemstones, such as open...restoration of mined-out lands. The lessons learned by the Sri Lankan gem industry, with centuries of experience...the environment in which we live. Introduction Sri Lanka has been identified as one of the earliest sources |  | | 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) | | Benton & S. Avella 83 Euhedral sinhalite from Sri L a n k a .........................................Euhedral sinhalite crystals, reported here from Sri Lanka fo r the first time, have yielded morphological...minerals found in the alluvial gem deposits of Sri Lanka. It was first recognized and described as a new...(1961) noted sinhalite from Eheliyagoda in Sabaragamuwa Province. Gunawardene and Rupasinghe (1986) in cluded...minerals from the Elahera gem field in Central Province. Henn (1985) characterized a distinctive olive-green |  | | 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...the effect of Devanmpiya Tissa's merit. Sapphire, beryl, ruby, these gems and many jewels and those pearls...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 |  | 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) | | southern Madagascar, East Africa, South India and Sri Lanka; those related to the Himalayan orogeny mostly...anorthite, corundum, chlorite, zoisite, tourmaline and beryl. Anorthite crystals are composed almost entirely...sapphires (e.g., Ilakaka/Madagascar and Ratnapura Balangoda/Sri Lanka), subparallel to the so-called Kashmir...trends of Mogok and of Pailin, Ilakaka and Ratnapura Balangoda, the Umba and Kashmir trends of Kashmir metasomatic...low-Fe sapphires of Pailin, Ilakaka and Ratnapura Balangoda, the Umba and trends of sapphires, andblue | | | Journal (issue) | | Benton & S. Avel/n 83 Euhedral sinhalite from Sri Lanka ............................ 91 by L. C. Pit/lln11...Mure-Ii-April /995 EUHED RAL S INHALI TE CRYSTALS FROM SRI LANKA v�v Lawrence C. Pitman, Cornelius S. Hu rlbut...Euhedral sinhalite crystals, reported here ji·om Sri Lanka for the first time, have yielded mo,phological...minerals found in the alluvial gem deposits of Sri Lanka. It was first recognized and described as a new...1 ) noted sinhalite from Eheliyagoda in Sabaragamuwa Province. Gunawardene and Rupasinghe ( I 986) in |  | | Journal (issue) | | scalenohedral calcite crystals. The Terlingua mercury district, with a few smaller, adjacent districts in Texas... 15 cm, from the Wagholi quarry complex, Pune District, Maharashtra, India. Don and Laura Aaron photo...Gracias mine, Diego de Almagro, EI Salado, Chaiiaral Province, Atacama Region, Chile. Don and Laura Aaron photo...photo. Calcite, 3 cm, from Wenshan, Yunnan Province, China. Don and LauraAaron photo. Malachite, 12 cm...Erythrite, 4 cm, from Bou Azzer, Tazenakht, Ouarzazate Province, Morocco. Don and Laura Aaron photo. Supplement |  | | 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...a .139 Bennett, Mr. ... ... 4, 27, 29 .••• Beryl ... ••• . 30 Binnerite . 30 ••• Bintenna .139 Biotite...Garnet. 29, 30, 97, 125, 141 Gem Searching in Sabaragamuwa. Ill, 119 Gems in Ceylon ...12, 26, 59, 67, |  | | 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...sapphire • Blue sapphire discovery near Kataragama, Sri Lanka • Sapphire and ruby carvings from Vietnam • Color...timely features on a recent sapphire rush in Sri Lanka and the emerging Micronesian cultured pearl industry |  | | 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...of four green tourmalines from the Taita-Taveta District, Kenya. For the present study, the contents of...2000. Geology of the Yellow Mine (TaitaTaveta District, Kenya) and other yellow tourmaline deposits in...deposits in the Isalo area of Madagascar, from Ratnapura, Sri Lanka and from Mogok, Myanmar, a nearly complete |  | | 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...countries, as well as Ilakaka in Madagascar and Sri Lanka (Langerwey, 1974; Gorghinian et al., 2013). Until...in Sri Lanka for which the nature of the primary deposits is still unknown. Except for Sri Lanka, Image |  | | 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 (issue) | | April2000 2000 April ' SriLankan Lankan 'f^ ^ < Sri gemdeposits deposits ; . gem LW NwwTN » ., GEPOL...Okkampitiya Okkampitiya gem gem field, field, Sri Sri Lanka Lanka 1 1 2 V. V.Mathavan Mathavan 1, , S.S.T....University University ofofPeradeniya, Peradeniya,Sri SriLanka Lanka 2.2.Institutfur Institut für Geowissenschaften...situated in in south-eastern south-eastern Sri Sri Lanka. Lanka. These These are are (1) (1) the the gem-bearing...deposit Introduction Introduction S riri Lanka, Lanka, well well known known for for its its wide |  | | Book | | A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...or etched by corrosive solutions, as occurs with beryl, or they may be fractured by rock movements during...that crystallize in the hexagonal system include beryl and apatite, and in the trigonal system are quartz...such as Porcupine and Hemlo districts; Noranda district, Quebec. USA: Mother Lode belt and others in...Localities Canada: Cobalt mining district and Thunder Bay District, Ontario. USA: several localities |
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Balangoda, Ratnapura District, Sabaragamuwa Province, Sri Lanka