 | Sutthirat, C., Saminpanya, S., Droop, G. T. R., Henderson, C. M. B., Manning, D. A. C. (2001) Clinopyroxene-corundum assemblages from alkali basalt and alluvium, eastern Thailand: constraints on the origin of Thai rubies. Mineralogical Magazine, 65 (2) 277-295 doi:10.1180/002646101550253 | Journal (article/letter/editorial) | | assemblages from alkali basalt and alluvium, eastern Thailand: constraints on the origin of Thai rubies C. SUTTHIRAT1...Science, Chulalongkorn University, Bangkok 10330, Thailand ABSTR ACT An inclusion of corundum (ruby) was...from the lateCenozoic Chanthaburi-Trat volcanics of eastern Thailand. The clinopyroxene is fairly sodic... sapphirine, alkali basalt, Thailand, xenocryst. Introduction THAILAND is a world-famous source of gem...University, Sukhumvit 23, Watthana, Bangkok 10110, Thailand { Current address: Department of Agricultural |  | | Journal (issue) | | Robert M. Shipley, Jr. The Chanthaburi-Trat Gem Field, Thailand Peter C. Keller 197 Gemstones with Alexandrite...GEMOLOGY Winter 1982 185 THE CHANTHABURI-TRAT GEM FIELD, THAILAND By Peter C. Keller With th e recent drastic...of Ch an tliabut i an d Ttat in south eastern Thailand. Thi s article reviews th e geology of th ese...gical Institute of America 186 Chanthaburi -Trat, Thailand hailand has been a world supplier of gem ruby...rubies come from Thailand. Of these, 85% to 90% come from the Chanthaburi-Trat district alone (Aranyakanon |  | Yui, Tzen-Fu, Wu, Chao-Ming, Limtrakun, Phisit, Sricharn, Weerapan, Boonsoong, Apichet (2006) Oxygen isotope studies on placer sapphire and ruby in the Chanthaburi-Trat alkali basaltic gemfield, Thailand. Lithos, 86 (3) 197-211 doi:10.1016/j.lithos.2005.06.002 | Journal (article/letter/editorial) | | sapphire and ruby in the Chanthaburi-Trat alkali basaltic gemfield, Thailand Tzen-Fu Yui a,*, Chao-Ming Wu b...Science, Chiang Mai University, Chiang Mai 50200, Thailand Received 6 April 2005; accepted 8 June 2005 Available...(C-T) alkali basaltic gemfield in southeastern Thailand. Sapphires have O-isotope composition in the range...Sapphire; Ruby; Alkali basalts; Garnet pyroxenite; Thailand 1. Introduction * Corresponding author. Tel...basaltic gemfield in the Chanthaburi-Trat (C-T) area, southeastern Thailand. A genetic scenario involving garnet |  | | Journal (article/letter/editorial) | | Road, Khlong Toey Nua, Watthana, Bangkok 10110, Thailand *Corresponding author, e-mail: seriwat@hotmail...and coexisting minerals of gem corundum from the Thailand area analysed by SEM-EDS in this study can be...feldspar (sanidine), nepheline, zircon, hercynite-spinel series and magnetite-hercynite series. The ruby...chemistry, SEM-EDS, corundum, ruby, sapphire, Thailand, origin. 1. Introduction Sutherland et al. (1998a)...origin contain primary mineral inclusions of Mgrich spinel, sapphirine, fassaite and garnet. Sutthirat et |  | | Journal (issue) | | Thai Lapidary International Co. Ltd, Bangkok, Thailand, and the center and right rings are from Prima...Composition in Ruby from the Bo Rai Gem Field in Trat Province, Eastern Thailand By Supparat Promwongnan and...Schwarz, Federated International GemLab, Bangkok, Thailand; Menahem Sevdermish, Gemewizard Ltd, Ramat Gan...part of the Rae domain of the western Churchill Province, within the Neoarchean volcano-sedimentary Prince...famous deposits are hosted by the Deccan volcanic province in India (Ottens et al. 2019). During the past |  | | Journal (article/letter/editorial) | | sapphire-zircon-magnetite xenolith from the Chanthaburi Gem Province, Thailand ROBERTR. COENRAADS The Gemmological Association...Mineral Resources, Rama 6 Road, Bangkok 10400, Thailand AND F. [.IN SUTHERLAND Division of Earth and...magnetite-bearing xenolith from Khao Wua, near Chanthaburi in Thailand, conclusively demonstrates a common origin for...alluvial zircons (2.57 ___0.20 Ma) from the Chanthaburi-Trat gem fields and within the potassium-argon ages of...the alkali basaltic volcanism in the Chanthaburi Province, These data suggest a common origin for sapphire |  | | Book | | Rock: 71 The Ruby Deposits of Chanthaburi-Trat, Thailand PART III Gemstones Formed by Very High Temperatures... which describes the rubies of Chanthaburi-Trat, Thailand. As we go deeper into the earth's crust, we...Araguaia regions of Mato Grosso, and the Gibue's district in Piaui. Placer diamonds are also found in several...mines in the Central district of Maharashtra, and also in the Eastern district in Orissa and the Bundelkhand...Bundelkhand (Northern) district in Madhya Pradesh. This latter district includes the famous Panna mines | | | Book | | Rock: 71 The Ruby Deposits of Chanthaburi-Trat, Thailand PART III Gemstones Formed by Very High Temperatures... which describes the rubies of Chanthaburi-Trat, Thailand. As we go deeper into the earth's crust, we...Araguaia regions of Mato Grosso, and the Gibue's district in Piaui. Placer diamonds are also found in several...mines in the Central district of Maharashtra, and also in the Eastern district in Orissa and the Bundelkhand...Bundelkhand (Northern) district in Madhya Pradesh. This latter district includes the famous Panna mines |  | 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) | | for gems mined from the modern-day Tajikistan (spinel), and “Bohemian ruby” was used for gems coming... with a hardness of 9 on the Mohs scale (while spinel and garnets crystallize in the cubic system and...and are softer with a hardness of 8). Unlike spinel and garnet, ruby is a dichroic mineral, which will...treatment techniques were developed in the 1990s in Thailand. These were different from the traditional blow-pipe...dominate the ruby trade in the early 1990s and Thailand increased its importance as the World’s main ruby |  | Graham, Ian, Sutherland, Lin, Zaw, Khin, Nechaev, Victor, Khanchuk, Alexander (2008) Advances in our understanding of the gem corundum deposits of the West Pacific continental margins intraplate basaltic fields. Ore Geology Reviews, 34 (1) 200-215 doi:10.1016/j.oregeorev.2008.04.006 | Journal (article/letter/editorial) | | syngenetic inclusions of columbite-group phases, zircon, spinel and rutile, some contain additional nepheline and...Tumbarumba field within the Snowy Mountains basalt province of southern NSW (Fig. 3) is spatially associated...form a southeastern part of the Walcha Volcanic Province (Duggan, 1989) and are dated between 45 and 75...different concentrations of corundum, zircon and spinel. Sapphire is dominant at most sites, but ruby is...2003). The gem corundum and associated zircon and spinel show surface features consistent with their derivation |  | | Journal (article/letter/editorial) | | ruby-sapphire-sapphirine-spinel assemblage from the Tertiary Barrington volcanic province, New South Wales,...2000, Australia Abstract Ruby-sapphire-sapphirine-spinel forms small, corroded, crystalline aggregates in...corundum, shows reaction rims of pleonaste spinel. Spinel in the aggregates has a compositional range...basaltic magmas (up to 1300~ and 20 kbar). Sapphirine-spinel thermometry suggests final crystallization temperatures...sapphire, commonly containing rutile silk and Ferich spinel inclusions (Hc 51-73, Mt 18-35, Mf 6-8, Usp 2-6) |  | | Journal (issue) | | Malipo, China Inclusions in Corundum from Bo Welu, Thailand Fall 2019 VOLUME 55, No. 3 EDITORIAL 293...in Ruby and Sapphire from the Bo Welu Gem Deposit in Chanthaburi, Thailand Supparat Promwongnan and Chakkaphan...and Color of Cultured Half-Pearls from Phuket, Thailand Kannika Kanjanachatree, Napapit Limsathapornkul...Sturman London, UK Manama, Bahrain Bangkok, Thailand John L. Emmett Lore Kiefert Fanus Viljoen ...analysis of emeralds from Malipo County in Yunnan Province of southwestern China. Among notable deposits |  | | Report (volume) | | Geologic Reconnaissance of the Mineral Deposits of Thailand By GLEN F. BROWN, SAMAN BURAVAS, JUA4CHET CHARALJAVANAPHET...___-__Northern Thailand.-_.._-_.-._._.___.___...___.___._...._. Northeastern Thailand.__-__-_____-__...Thailand______-__-________-_--'___-__________-_Gulf of Thailand east coast__----__-_-_------_-_---_--__-__Physiography..._-_--_______-_-_---_-______._.._____________ Pha Khan district, by George C. Taylor, Jr., and Saman Buravas...._____-_-_-_----_--____ Huai Luang placers, Chiang Rai, by Saman Buravas and George C. Taylor, Jr_ ___________ |  | Sutherland, F. L., Coenraads, R. R., Schwarz, D., Raynor, L. R., Barron, B. J., Webb, G. B. (2003) Al-rich diopside in alluvial ruby and corundum-bearing xenoliths, Australian and SE Asian basalt fields. Mineralogical Magazine, 67 (4) 717-732 doi:10.1180/0026461036740129 | Journal (article/letter/editorial) | | compared with a garnet granulite origin proposed for Thailand rubies and a xenolith of corundum-bearing garnet...fields, but have some similarities with eastern Thailand rubies. K EY WORDS : corundum, ruby, sapphire...reworking and (2) similarity to some Cambodian-Thailand rubies from South East Asian basaltic gemfields...disaggregated into resistant ruby xenocrysts (K sapphirine, spinel intergrowths) are obscure, but varied between gemfields...(K garnet, sapphirine inclusions) from eastern Thailand F. L. SUTHERLAND ETAL. Cenozoic basalt fields |  | | Book | | Inclusions in Marble-Hosted Gem-Quality Ruby and SpinelfromMogok,Myanmar Reprinted from: Minerals 2020...of SE Asia (Vietnam, Laos, Cambodia, Malaysia, Thailand, Indonesia, Myanmar and Malaysia), and has published...ensemble in which ruby and sapphire associate with spinel and sapphirine in a highly calcic anorthosite-layered...new detailed U–Pb dating on gem-quality ruby (and spinel) by using zircon and zirconolite inclusions in...zirconolite grains were analyzed from ruby and spinel crystals. Analyses were made of core and rim zones |  | | Book | | Asian Institute of Gemological Sciences, Bangkok, Thailand Butterworth-Heinemann London Boston Singapore...(colour swirls), etc. Major sources: Burma, Thailand, Cambodia, Sri Lanka, India, Australia, Kenya...sapphire - Sri Lanka 77 Ruby - Thailand and Cambodia 80 Sapphire - Thailand 86 Sapphire - Pailin, Cambodia...areas 251 Burmese sapphires 252 Bibliography 253 Thailand and Cambodia 254 History 254 Mining areas 261...with many other red stones, such as garnet and spinel ('ballas ruby'). The sapphire was listed under |  | Kirkland, Christopher L., Danišík, Martin, Marsden, Ruby, Piilonen, Paula, Barham, Milo, Sutherland, Lin (2020) Dating young zircon: A case study from Southeast Asian megacrysts. Geochimica et Cosmochimica Acta, 274. 1-19 doi:10.1016/j.gca.2020.01.013 | Journal (article/letter/editorial) | | geochronology to zircon megacrysts from Cambodia and Thailand. These zircon megacrysts formed in mantle-derived...SIMS. Regional geology Southeast Asia, including Thailand and Cambodia, comprises two dominant crustal blocks...Indochina terrane, which extends from eastern Thailand, Laos, across Cambodia and into southern Vietnam...are collectively known as the SE Asian Volcanic Province (Fig. 1). Two separate periods of volcanism are...Flower, 1998). Zircon along with gem corundum, spinel, anorthoclase, olivine, alkali amphiboles, biotite |  | | Journal (issue) | | purchased by a German gem merchant in northern Thailand and were said to originate from Myanmar by local...local dealers. During further trips to Thailand, our supplier was able to obtain some similar cabochons...green inclusions: amphibole • black inclusions: spinel Microscopic observations The crystals forming the...2000). Inclusions in ruby are black chromiumbearing spinel, plagioclase and chromium-bearing mica (fuchsite);...anorthite and magnesium-iron-aluminium-chromium spinel (picotite). Amphibole analyses quoted by Leake |  | | Journal (article/letter/editorial) | | anthophyllite ± green pargasite ± green or red spinel ± sapphirine ± cordierite (up to 30 cm single crystals)...Soamiakatra Ilakaka Andilamena Pailin (P) Pailin (C) Bo Rai Chanthaburi Mong Hsu Mogok 40 Maniitsoq Storø...Ilakaka, and Andilamena in Madagascar, Bo Rai and Chanthaburi in Thailand, Pailin in Cambodia and Winza in |  | Palke, Aaron C., Wong, Jacqueline, Verdel, Charles, Ávila, Janaína N. (2018) A common origin for Thai/Cambodian rubies and blue and violet sapphires from Yogo Gulch, Montana, U.S.A.?. American Mineralogist, 103 (3) 469-479 doi:10.2138/am-2018-6164 | Journal (article/letter/editorial) | | S.A., with rubies from the Chantaburi-Trat region of Thailand and the Pailin region of Cambodia. The...ruby. However, the southeastern Asian nations of Thailand and Cambodia are important major historic producers...between Thailand and Cambodia. In Thailand, the gems fields are found in the Chanthaburi-Trat area, while...generally higher proportion of rubies found in Thailand and Cambodia relative to other major producers...deposits focus on either the Chathaburi-Trat area in Thailand or the Pailin region in Cambodia, it is |  | | Book | | 374 • RUBY & SAPPHIRE 17 329 296 Kenya Thailand/Camborua 374 Two geologists' dream: T heir own...of Thailand/Cambodia ruby 439 Characteristics ofThai/Cambodian sapphire 442 Bibliography-Thailand/Cambodia...473 History 474 Luc Yen 474 Quy Chau (Bu Khang District) 475 Other Vietnam corundu.n1 localities 478 Mining...to the rubies, sapphires and jade of Burma and Thailand, jewels and jewelry are a constant fixture. India...destined to become my home for over a decade. Thailand was, is, and probably always will be, one of those |  | | Journal (issue) | | Issue 42 All About Colored Gemstones Special Thailand Route of the Ruby Bangkok Host of the ICA Congress...Issue 42 All About Colored Gemstones Special Thailand 5 Editor’s Note Origins and the Responsible...Colored Gemstone Association 46 Special Thailand Issue Thailand: The Undisputed Ruby Trading Kingdom Thai...by the Number Lapidary Art in Thailand Precision Gem Faceting in Thailand Top Grade – Women in the World...of Gemstones Pranda Group – Craftsmanship from Thailand to the World The Evolution of the Thai Gem and |  | | Conference Proceedings | | Stellenboch (1991), Paris, France (1993); Bangkok, Thailand (1995); Idar Oberstein, Germany (1997); Goa, India...Spain, Sri Lanka, Switzerland, Sweden, Tanzania, Thailand, U.S.A., Vietnam and Zimbabwe. During the 20th...from a new occurrence from Paramathi in Karur district of Tamil Nadu, India. 12:00 – 12:20 Wilawan...Review of Rubies and sap phires from Chantaburi – Trat and Kanchanburi gems field, Thaïland. 12:20 – 12:40...Xianyu: Turquoise from Zhushan county in Hubei province of China Elizabeth Su: The vivid world of jadeite |  | | Journal (issue) | | Franks, B.Sc., Ph.D., F.G.A. South Yorkshire & District Branch: J. L Platts, F.G.A. Examiners: E. A. Jobbins...stone could be natural/synthetic ruby, garnet, spinel, glass, etc., and the steps to follow would be...1984. XIX, 3 SAPPHIRES FROM KANCHANABURI PROVINCE, THAILAND By MAHINDA GUNAWARDENE, F.G.A., D. Gem. G...Bangkok, Thailand. ABSTRACT An occurrence of sapphires in the Kanchanaburi province, Thailand, is dealt...geological investigations of the Kanchanaburi province are reported and compared with the well-known |  | | Journal (article/letter/editorial) | | Toombullup District St. Arnaud District McBride Hoy Province Central Barrington Province Snowy Mountains...Mountains Province Older Volcanics, Group 3 Older Volcanics, Groups 1 & 2 Sapphires from St. Arnaud distract...Thailand3 Chanthaburi-Trat alluvial sapphires, Thailand4 Tok Phrom alluvial rubies4 Bo Na Wong alluvial rubies4...rubies4 Nong Bon alluvial rubies4 Bo Rai alluvial rubies4 Tunkin depression, Russia1 Dak Nong, Vietnam2...et al., 1996). Rare inclusions include sulfides, spinel and Th-, Ce-rich phosphates. These inclusions suggest |
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