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| Vn1 I I M F Y Y i l GPRlNr. 1QRA CHINA The quarterly journal ot the Lernologlcal Institute ot Amertca...2 2 Number 1 TABLE OF CONTENTS EDITORIALS 1 China Richard T. Liddicoat, Ir. 2 The Gems & Gemology...Resources of China 14 The Changma Diamond District, Mengyin, Shandong Province, China Peter C. Keller...o - d o n g 24 I ( , r Gemstone Carving in China: Winds of c h k g e Sally A . T h o m a s a n d...TECHNIQUES 35 A Gemological Study of Turquoise in China 38 The Gemological Characteristics of Chinese |
 | 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) |
| found in alkali basalts (e.g. southeastern Asia, China, Africa) are commonly medium-rich to rich in Fe...elements can act as the signature of a single gem-deposit as did oxygen isotope composition (Yui et al.,...matter of debate. Geological settings for each ore deposit are briefly presented in the corresponding section...submicroscopic inclusions of columbo-tantalite and zircon respectively. Less common trace elements (e.g....southeastern Asia, China, and Africa (Fig. 1, Table 2). In the Pailin alluvial deposit (Cambodia), Sutherland |
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| 1007/s00710-010-0120-z ORIGINAL PAPER Genesis of zircon megacrysts in Cenozoic alkali basalts and the heterogeneity...of subcontinental lithospheric mantle, eastern China Yao Yu & Xisheng Xu & Xiaoming Chen Received: 2...online: 22 June 2010 # Springer-Verlag 2010 Abstract Zircon megacrysts are found in alluvial deposits associated...basalts from Changle in Shandong Province, Mingxi in Fujian Province and Penglai in Hainan Province within...within the coastal area of eastern China. They are colourless, transparent to light brown–maroon, and |
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| feldspar, low-Ca plagioclase (albiteoligoclase) and zircon. Rare inclusions include Fe,Cusulphide (low in...testable. Introduction Most of the world’s current sapphire production is taken from recent or palaeo-alluvial...distributed in eastern Australia, Thailand and eastern China. The lack of understanding of corundum genesis and...relationship between the occurrence of alluvial sapphire deposits and the presence of basaltic rocks in...Coldham 1985; Krosch and Cooper 1990), eastern China (Keller and Wang 1986; Guo et al. 1992), the Indochina |
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| , I The Sapphires of Penglai, Hainan Island, China W h g Furui 161 A Gem-Quality Iridescent Orthoamphibole...with a certain amount of rough diamonds would deposit his rough in a bank as collateral at a declared...interest rate. He would then buy more diamonds, deposit them in the bank, and, in turn, get another low-interest...Guyana! Lesotho, as well as China. Althougl~ production statistics for China are not available! the total...countries such as South Korea and perhaps even China, and that the diamond industry can attract some |
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| INTO CHINA Site of ICA Congress 2009 13 ICA CONGRESS 2009 Panyu, CHINA CONTENTS 5 Foreword 6 ICA...ICA News 10 Color in China 10 Jewelry Development in Panyu – A Story of the Twin Cities 12 The National...and Their Standardization in China 20 Colored Stone Deposits in China 24 Factors Affecting China’s...26 Mining A Glimpse of the New Fine Emerald Deposit at Xinjiang’s Davdar Mine Education 32...13th ICA Congress that is being held in Panyu, China this year. Despite the global economic slowdown |
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| slices from Myanmar|Wurtzite from Tanzania|Star zircon| Amber processing in Lithuania|Shungite|Gem-set...and Katrien De Corte 692 Age Determination of Zircon Inclusions in Faceted Sapphires By Klemens Link...GemeWizard Ltd., Ramat Gan, Israel; Guanghai Shi, China University of Geosciences, Beijing; James E. Shigley...Kondoa District, Tanzania A historically important deposit of chrysoprase and prase opal in Tanzania is located...and polished material (e.g. Figure 7) from a new deposit in Tanzania was shown by Werner Radl (Mawingu Gems |
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| inclusions 59701 MA ABSTRACT Gem corundum (sapphire) has been mined from an ultramafic lamprophyre...significant advancement in our understanding of sapphire genesis and sheds light on how mantle-derived...the surface. 1 ACCEPTED MANUSCRIPT Keywords: sapphire; corundum; melt inclusions; lamprophyre; liquid...ocelli RI 1. Introduction The Yogo Gulch sapphire deposit in central Montana has produced exceptional...exceptional gem- SC quality corundum (sapphire) for more than 100 years. Discovered by gold prospector Jake |
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| and Chemical Composition of Penglai Sapphire in Hainan Province, China Guang-Ya Wang 1,2 , Xiao-Yan Yu 1...Penglai School of Gemology, China University of Geosciences, Beijing 100083, China; 2009200044@cugb.edu.cn...and Mineral Resources, China University of Geosciences, Beijing 100083, China Southern Marine Science...Guangdong Laboratory (Guangzhou), Guangzhou 511458, China Key Laboratory of Deep-Earth Dynamics, Institute...Academy of Geological Sciences, Beijing 100037, China Shandong Academician Workstation of Diamond Mineralization |
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| calcite bangles resembling jadeite|Large pink sapphire with diffusioninduced star|Mid-year 2016 Myanma...sapphires. These rubies recovered from the Aappaluttoq deposit weigh 0.29–2.53 ct and were characterized for an... ARTICLES Feature Articles 294 Ruby and Pink Sapphire from Aappaluttoq, Greenland By Christopher P....Properties and Preliminary Heat Treatment of Gem-Quality Zircon from the Central Highlands of Vietnam By Le Thi-Thu...GemeWizard Ltd., Ramat Gan, Israel; Guanghai Shi, China University of Geosciences, Beijing; James E. Shigley |
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| Gemmological Institute, China University of Geosciences, Wuhan 430074, P.R. China ABSTRACT: The numbers...NASLAW ICE ~ .~ a 1km L--J SCALE Nephrite Jade Deposit JORDAN6 w SLASK I • D ALL UVI UM .. GRAN ITE...circulating imitations of rough emerald, ruby, sapphire, and diamond are well known. Recently, there has...Parallels are drawn with the Australian Argyle deposit. R.A.H. Evidence for crystals from the lower mantle:...The Rist and Ellis properties are in Alexander County and close to the small town of Hiddenite. The bedrock |
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| Establishing the Geographic Origin of Diamonds Sapphire from Muling, China The History of Pigments Sourced from...269 The Geographic Origin of Diamonds, Sapphire from China, and Pigments Sourced from Gem Materials...individual diamond. 290 Sapphire Beneath the Rich Black Soil of Muling, Northeastern China Yimiao Liu and Ren...analysis of blue and fancycolor sapphire from the agricultural area of Muling, China. p. 302 318 Gems on Canvas:...color of pink spinel reportedly from the Kuh-iLal deposit in the Pamir Mountains of Tajikistan. p. 330 |
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| Director Natural History Museum of Los Angeles County Featuring Photographs by Harold and Erica Van...Western Australia Index 141 FOREWORD Each gem deposit-whether of primary origin in the parent rocks;...impression that one is actually present in a described deposit; observing how the gem crystals grow in their birth...gallery in the Natural History Museum of Los Angeles County, entitled "Gemstones and Their Origins," which...detail, along with an example of an important gem deposit where this process has been observed. In each chapter |
| | Book |
| Director Natural History Museum of Los Angeles County Featuring Photographs by Harold and Erica Van...Western Australia Index 141 FOREWORD Each gem deposit-whether of primary origin in the parent rocks;...impression that one is actually present in a described deposit; observing how the gem crystals grow in their birth...gallery in the Natural History Museum of Los Angeles County, entitled "Gemstones and Their Origins," which...detail, along with an example of an important gem deposit where this process has been observed. In each chapter |
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| c. 1990 blue beryls were found in a secondary deposit in Mozambique which were similar to the Brazilian...anecdotal comments on a cultured pearl farm in China, remarks on non-nucleated cultured pearl growth...pearls A visit to a cultured pearl farm in Wuhan, China, was one of the highlights of attending a conference...conference at the Gemmological Institute of the China University of Geosciences. The cultured pearl farm (Figure...The buildings of a cultured pearl farm in Wuhan, China. © Gemmological Association and Gem Testing Laboratory |
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| The origin of sapphires" U-Pb dating of zircon inclusions sheds new light ROBERT R. COENRAADS School...Australia Abstract Uranium-lead isotope dating of two zircon inclusions in sapphires from the Central Province...of basalt potassium-argon ages of 19 to 38Ma and zircon fission track ages of 2 to 49Ma for the timing...and the other minerals found as its inclusions (zircon, columbite, thorite, uranium pyrochlore, alkali...concentrations of sapphire. KEYWORDS: sapphire, uranium-lead dating, inclusions, zircon, Central Province |
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| associated placer deposits___.______. ______ Yogo sapphire deposit. _________________________________________...setting. ______________________________________ Sapphire-bearing dike_---_-----___-_----_----_------__Sapphires...reserveS--_-_________-.-p-_ __-______--__ Missouri River sapphire deposits .-___________-____-________-_-._ Location...____________________________________ Roek Creek sapphire deposit. _ __________________________________ Location..._________.___.._..___-._-Dry Cotton wood Creek sapphire deposit---... ____________________ Location __.._ |
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| ........................................... 17 China ..................................................Catamarca, Argentina, is the only major rhodochrosite deposit that produces banded rhodochrosite, stalactites...the and international buyers have Marlborough deposit, shown been visiting the fields. by Richard Osmond...recognized for its bright colors and good stability. Sapphire N ew South Wales: Production is at its lowest...is the only miner operating on the Gloucester sapphire and ruby fields, having successfully prospected |
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| necessarily of the publishers. Cover Picture Burmese sapphire crystal weighing 502 ct, unearthed in 1994 at...Gwebin, in Burma's Mogok Stone Tract. (See Burmese sapphire giants, p. 551) Photo by UKhinMg Win ISSN: 1355-4565...be included in the list of sapphire giants discussed in the Burmese sapphire paper. But with verified occurrences...1355-4565 548 J. Gemm., 1995,24,8 o - I 400m I CHINA NEPHRITE ORE DAEILMIN ~FAULT LEGEN D ALLUV IUM...of Korea J. Gemm., 1995,24, 8 551 Burmese sapphire giants Richard W. Hughes* and U Hla Win** * 4894 |
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| 679–684 SCIENTIFIC COMMUNICATIONS THE SILVER BOW SAPPHIRE OCCURRENCE, MONTANA: EVIDENCE FOR A VOLCANIC BEDROCK...BEDROCK SOURCE FOR MONTANA’S ALLUVIAL SAPPHIRE DEPOSITS AARON L. BERGER†Department of Geosciences, Virginia...The first confirmed bedrock source of alluvial sapphire deposits in southwest Montana has been found 9...source rock of the Silver Bow occurrence is a sapphire-bearing felsic lapilli tuff of the Eocene Lowland...of known primary sapphire deposits and may represent a previously unrecognized deposit type. Mass wasting |
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| Bernhardt, a n d Fred M o u a w a d The Yogo Sapphire Deposit Keith A. ~ ~ c h a l u k NOTES AND NEW TECHNIQUES...KUDOS FOR "COLOR GRADING OF COLORED DIAMONDS" SAPPHIRE-BEARING ALKALI BASALTS I N NIGERIA Congratulations...two possiblc exceptions, in Nigeria and Southcrn China, but these are not well documented.)" In the Iournal...Froin our description, it is evident that the vast sapphire deposits in central Nigeria are not "a possible...1992. The nzby crystrrls from the Mong Hsu marble deposit have clipymmidnl to barrel-shaped hobils and reverrl |
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| associated volcaniclastic rocks as a source of sapphire in eastern Australia a a G. M. Oakes , L. M...associated volcaniclastic rocks as a source of sapphire in eastern Australia, Australian Journal of Earth...associated volcaniclastic rocks as a source of sapphire in eastern Australia G. M. OAKES, L. M. BARRON...England which hosts the world's largest producing sapphire mine at Kings Plains. The alluvial deposits of...strong local tribal variations in the nature of the sapphire, suggesting that they are derived by reworking |
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| eastern Australia, far eastern Russia, eastern China, Laos, Vietnam, Thailand, Rwanda, Cameroon, Nigeria...minerals of the tourmaline supergroup, vesuvianite, zircon, zoisite. Non-gemmologists may question the appropriateness...pallasite meteorites, gem benitoite from San Benito County California, and Colombian emeralds (for whose genesis...confusion among geologists and mineralogists. ‘Sapphire’ and ‘ruby’, for example, are not mineral names... Tanzania and Madagascar. The gravels in each deposit include gem-forming minerals that crystallized |
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| and Y a n Liu NOTES AND NEW TECHNIQUES Ruby and Sapphire from the Southern Ural Mountains, Russia Alexander...Alexander J. Kissin Primary occurrences of ruby, pink sapphire, sapphires of other colors, and spinel have been...specimens were relatively large (pink and blue sapphire up to 10 x 20 mm; ruby up to 10 mm) but not of...marble quarry, where he discovered ruby, pink sapphire, and other varieties of corundum in situ (figure...(figure 1).In 1983, ruby and several varieties of sapphire were found in marble at Choolzsinsolzoye near |
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| NOTES AND NEW TECHNIQUES "Ti-Sapphire":Czochralski-Pulled Synthetic Pink Sapphire from Union Carbide Mary...Sketching Detecting Treated Emerald, Ruby & Sapphire Identifying Challenging Synthetics Blue Gem Alternatives...market since the late 1980s. Visits to two of the sapphire-producing areas-Phan Thiet and Di Linh-confirmed...168-186 Gemotogical Institute of Amaica Vietnam Sapphire 1 n recent years, considerable attention has...search of sapphires ("Sapphire Fever Strikes . . . 1995).Because the blue sapphire deposits of southern |
