 | | Journal (issue) | | AGTA Gemological Testing Center, New York, NY10017, USA e-mail: info@agta-gtc.org 2. SSEF Swiss Gemmological...magnificus, Nodipecten nodosus, Nodipecten subnodosus, USA Introduction Not frequently seen but relatively...nodosus is found in the seas off the south-eastern USA to Brazil and N. subnodosus in the seas off western...Incorporated, Houlton, Maine, Fitzpatrick, K., 2002. Splash! Marine-inspired jewelry. USA http://www.departures...E., and Misiorowski, E., 1987. The history and Oxford gemology of Queen Conch pearls. Gems & Wight, W |  | | Book (volume) | | Mineralogy by Vandall T. King and Eugene E. Foord Maine Geological Survey DEPARTMENT OF CONSERVATION Walter...Resources Information, Maine Geological Survey Walter A. Anderson, State Geologist Maine Geological Survey...DEPARTMENT OF CONSERVATION 1994 Copyright ©1994 by the Maine Geological Survey, Department of Conservation. All...Cover photograph: Fluorapatite, Pulsifer quarry, Auburn, Maine (2.2 cm specimen), Harvard Mineralogical...Wendell E. Wilson, ©1985. The laws and policies of Maine and the United States prohibit discrimination in |  | | Journal (issue) | | southern China • Update on tourmaline from Mt. Mica, Maine • Update on Cu- and Mn-bearing tourmaline from Mozambique...world-famous Pala pegmatite district in San Diego County will take place August 25, 2006. No more than 50...“emphatically hint to definite places of origin,” such as almandine with fibrous sillimanite from Okkampitiya, Sri...Institute) were studied for comparison: Russian (5), Biron (5), and Linde-Regency (1). In addition, literature...faceted synthetic specimens (8 Malossi, 1 Russian, 1 Biron, and 1 LindeRegency) were obtained by a Cambridge |  | | Journal (issue) | | Monica, Monica, California California 90404, 90404, USA USA Fig. Fig. I. 1. This assembled agate specimen...Sinkankas, San Diego, California California 9lO9, 9109, USA The literature of antiquity frequently mentions...structures in hydrothermally-grown synthetic citrine from USA; growth lines parallel to the basal pinacoid c (0001)...operated. Battery included. 9 k n ^ Made in USA SPECIFICATIONS I • • • • Weighing Capacity Resolution...Africa. Africa. Clarendon Clarendon Press, Oxford. Oxford. Cartwright, Cartwright, I., Barnicoat, Barnicoat |  | | Journal (issue) | | topography and her clase and labradorite), garnets (almandine, J*, WMs, fascinating landscapes indicate rhodolite...garnets W. W m. Hanneman, Ph.D. Poulsbo, WA 98370, USA ABSTRACT: Gem garnets are essentially solid solutions...indices* Pyrope-almandine 1.747-1.794 Pyrope-spessartine 1.740-1.780 Almandine-spessartine 1.816-1...member garnets Refractive indices Pyrope 1.714 Almandine 1.830 Spessartine 1.800 Grossular 1.734 ...components by combining pyrope with grossular and/or almandine with spessartine. differentiating an end-member |  | | Journal (issue) | | Research, Santa Monica, CA, USA †GIAGem Trade Laboratory, New York, NY, USA Introduction In recent years...diamond. Diamond Diamond Conference Conference Oxford Oxford(unpublished), (unpublished), 13. 13. 461 ...New NewYork Yorkand andSanta SantaMonica, Monica,USA USA GIA Abstract Opalite Opalite production production...the Sweet rhodochrosite Home mine, Alma, Colorado, USA. Details of of J. Gemm., 1993, 23, 8 some of the...Rhineland. M.O'D. SCOVIL, J., 1993. N e u e s aus den USA: Die Tucson Gem & Mineral Show 1993. Lapis, 18, |  | | Book (volume) | | 0 n101ercai o of Maine j f·~ ....__ :,,. . - .._"' ..;. .. ~ L-- -~ \. • .J_..::.; I Volume...History, Gems, and Geology edited by Vandall T. King Maine Geological Survey DEPARTMENT OF CONSERVATION Robert...Robert G. Marvinney, State Geologist of Maine Volume 2: Mining History, Gems, and Geology Edited by...Resources Information, Maine Geologi,cal Survey Robert G Marvinney, State Geologist Maine Geological Survey...DEPARTMENT OF CONSERVATION 2000 Copyright ©2000 by the Maine Geological Survey, Department of Conservation. All |  | | Journal (issue) | | Nangarhar Province. Well-formed crystals of dark red almandine occur in Proterozoic schists. The garnet-bearing...Pala, CA; cut stone courtesy of the Los Angeles County Museum of Natural History. Photo 0 Harold a ) Erica...defined-gross~~lar, andradite, pyrope, pyrope-almandine, almandine~almandine-spessartine, spessartine, and pyrope-spessartine-and...grossular, andradite, pyrope, pyrope-almandine, almandine, almandine-spessartine, spessartine, and pyrope-spessartine...of 3.91 1 will consist exactly of 30 per cent almandine [sic] and 70 per cent pyrope [sic], since the |  | | Book (edition) | | Saul, Sonja Schwartzman, John Sinkankas, Kenneth Sumner, Lillian Turner, Martin Zinn. who some way with...very rapid and unamin distinguishing between almandine garnet and ruby. The polariscope is useful in... tions PC: Private Collection LA: Los Angeles County Museum (Los Angeles) COMMENTS This section contains...Pyrophyllite: North Carolina Japan San Benito County, Gahnite: Colorado Jadeite: California b 1 ...axis axis mean, Jessieville, Arkansas Spodumene: Maine York Madagascar Keystone, South Dakota Quebec |  | | Journal (issue) | | gemologist, is associate director of the Los Angeles County Museum of Natural History, Los Angeles, CA; and...1980 Dickson and Smith. 1976 Garnet group (see almandine, andradite, grossular, hydrogrossular group, pyrope...Pink to red coordination Rhodollte (see pyrope-almandine) Mnz* in octahedral Rhodonlte Pink coordination...1983-2009. Edson G.M. (1980) The Red Cloud mine, Yuma County, Arizona. Mineralogical Record, Vol. 11, No. 3...(1985b)Exsolution of n~etallic copper from Lake County labradorite. Geology, Vol. 13, pp. 644-647. Rossman |  | | Journal (issue) | | Trade Laboratory, Inc., Santa Monica, California, USA Abstract Dark brownish-red garnets reported to be...essentially pyrope or almandine, or they may be pyrope-almandine or almandine-spessartine mixtures (Stockton...Madagascar, Russia, Sri Lanka, United Kingdom (Scotland), USA, Zambia and Zimbabwe (Webster, 1983); Argentina,...chemistry is consistent with that of garnets in the almandine-spessartine solid solution series (see Deer et...the garnets in the necklace were identified as almandine-spessartine. The chemical analysis, showing a |  | | Journal (issue) | | neither purpurine purpurine nor hematinon. In the Oxford Oxford Dictionary, haematinon haematinon or haematinum...The word purpurine or purpurin Oxford and Chambers purpurin in the Oxford Dictionaries Dictionaries is...[Chas.II] favourite dish of eggs and ambergrease". {Oxford Diet.). This article is an excerpt taken from my...around 1981 and marketed under the trade name of 'Biron'. In common with other synthetic emeralds grown...this way, the refractive indices of some of the Biron fell into the natural emerald range at 1.571-1.576 |  | | Journal (issue) | | birefringence/dispersion ratio of gemstones 286 Gem Notes Almandine from Erving, Massachusetts|Amethyst from São Paulo...Edward Boehm, RareSource, Chattanooga, Tennessee, USA; Alan T. Collins, King’s College London; John L....Emmett, Crystal Chemistry, Brush Prairie, Washington, USA; Emmanuel Fritsch, University of Nantes, France;...E. Post, Smithsonian Institution, Washington DC, USA; Andrew H. Rankin, Kingston University, Surrey; George...Rossman, California Institute of Technology, Pasadena, USA; Karl Schmetzer, Petershausen, Germany; Dietmar Schwarz |  | | Book (edition) | | AMSTERDAM • BOSTON • HEIDELBERG • LONDON • NEW YORK • OXFORD PARIS • SAN DIEGO • SAN FRANCISCO • SINGAPORE •...Butterworth-Heinemann Linacre House, Jordan Hill, Oxford OX2 8DP 30 Corporate Drive, Burlington, MA 01803...Elsevier’s Science and Technology Rights Department in Oxford, UK; phone: (44) (0) 1865 843830; fax: (44) (0)...absorption bands in the spectrum of Ceylon zircons and almandine garnets. However, it was not until 1932 that a...his own gemmological correspondence course in the USA, founded the Gemological Institute of America. In |  | | Journal (issue) | | Nacken/Cermany H Espig/IG-Farben/Germany CC Chatham/USA Cilson/France W Zerfass/Cermany FIS FIS FIS FIS...Flanigen/Quintessa/Linde/USA Adachi Shin/Japan Regency/Vacuum Ventures/USA HyS 1988 Aquamarine, red...Hoquiam/USA 1903 Ruby (SP) 1907 Blue sapphire Verneuil/Baikovsky/France 1942 Ruby L Merker/Linde/USA 1947...corundum Linde/USA Linde/USA 1960 Ruby discs (SP) FR Charvat/Linde/USA 1965 Ruby H LaBelle/Tyco/USA 1971 Sapphire...Bijoreve/Seiko/Japan 1983 Ruby, etc. (NC) Union Carbide/USA and others 1990 Pink Ti-sapphire FIF VeF VeF VeF |  | | Journal (article/letter/editorial) | | sandwiched between continentally-derived units, i.e. the Biron Terrane to the North, and the Tahuin Group to the...were obtained. Garnet is characterised by a high almandine endmember content, averaging around 65 mol% (Table...metapelites Fig. 5. (a) Garnet composition in terms of almandine, pyrope and grossular end-members. (b) Garnet...Grt-Cld-Ky assemblage is defined by the incoming of almandine + kyanite at the expense of Fe-chlo- ritoid +...International Symposium on Andean Geodynamics, Oxford (UK), Extended Abstracts Volume, 359-362. Ernst |  | | Book | | Hill, Oxford OX2 8DP A division of Reed Educational and Professional Publishing Ltd R OXFORD A member...growth of emerald Linde emerald — Regency emerald Biron emerald Russian hydrothermal emerald Lechleitner...While working in the sapphire fields of Montana, USA, in 1992 I found many crystals with a pale green...jewellery, being routinely sold as heated stones in the USA. A common thread links the three pictures. In all...of America, 5355 Armada Drive, Carlsbad CA 92008 USA (telephone (subscriptions) (1) 800 421-7250 ext. |  | | Book (edition) | | AMSTERDAM • BOSTON • HEIDELBERG • LONDON NEW YORK • OXFORD • PARIS • SAN DIEGO SAN FRANCISCO • SINGAPORE •...Jordan Hill, Oxford OX2 8DP, UK 30 Corporate Drive, Suite 400, Burlington MA 01803, USA First published...Elsevier’s Science & Technology Rights Department in Oxford, UK: phone (+44)(0) 1865 843830; fax (+44)(0) 1865...Canada, Germany, Thailand, Vietnam, the UK and the USA, making this a truly international collaboration...or more minerals. Figure 1.2 5 Fantiscritti quarry, Carrara, Italy where marble is mined The Geological |  | | Journal (issue) | | the presence of brownish-green dravite, quartz, almandine intergrown with white mica, and andalusite. Garnet...information about their host rock types, dravite, almandine and tremolite crystals have been chemically analyzed... 24.32 CaO 13.55 Na20 Total 1 B203 H20 Almandine Notes not det = not determined, bd = below detection...detection limit 1 = Tremolite, dravite and almandine from Mong Hsu (Burma) 1 2 = Malenco serpentinite...of their formation in different rock types . Almandine and white mica (as overgrowth on garnet) typically |  | | Report (issue) | | International, LLC P.O. Box 263, East Hampton, CT 06424, USA Phone 1.860.267.1512; fax 1.860.267.7225 www.lapisint...WEISE VERLAG, GERMANY AND LAPIS INTERNATIONAL, USA About Emeralds Emeralds· of the World Beryl and...Laboratory Emeralds ..................84 Karl Schmetzer USA: Hiddenite, North Carolina ...........64 Michael...Panjikar et al (1 997) CHINA • Malipo, Yunnan Malipo County, Ailaoshan region: emerald deposits discovered...alternating series of metasediments, kyanite-almandine-amphibole gneiss, granite gneiss and ultrabasics |  | | Journal (issue) | | Emmanuel Fritsch LETTER L - L UNUSUAL NEW ALMANDINE GARNETS FROM BRAZIL At our laboratory in Siio...was either spinel or garnet (probably pyrope-almandine), and reported that it came from an alluvial deposit...those of pyrope (3.58 to 3.61). At this point, almandine seemed the likely candidate, but a hardness test...parameter of A,, = 11.508, which is less than that of almandine (11.530).Qualitative chemical analysis by energy...characteristics but were found to be primarily almandine in composition. Photo by Ivan Leio Sayeg Filho |  | | Journal (issue) | | produced by Regency Created Emeralds Co. in the USA. Since 1979 various synthetic beryls including green... 0.007 2.69 orange-pink weak violet violet Biron (Australia) pinkish Novosibirsk (Russia) pinkish...synthetic beryls are also produced in Australia by Biron International Ltd., which are well known as a major...reminiscent of the natural red beryls from Utah, USA (see Henn and Becker, 1995). The physico-chemical...U., and Becker, G., 1995. Rote Berylle aus Utah, USA Neue Beobachtungen. Z. Dt. Gemmol. Ges., 44, 55--{i0 |  | | Journal (issue) | | the first four stones are more characteristic of Biron or Russian hydrothermal synthetic emeralds. Fig...revealed An occurrence of sectored birefringence in almandine from the Gagon Terrane, Labrador. D. BROWN AND...105-10. 1 illus. in black-and-white. Birefringent almandine with a composition of Alm079 Grs0173 Prp0024 Sps0015...M.O'D. Petrology of a jadeite-quartz/coesite-almandine-phengite fels with retrograde ferronyboite from...Azusa in Los Angeles county was subsequently donated to the San Bernardino County Museum. Green stones |  | | Book (edition) | | Halley Court, Jordan Hill, Oxford OX2 8EJ @ i PART OF REED INTERNATIONAL RL.C. OXFORD LONDON GUILDFORD BOSTON...absorption bands in the spectrum of Ceylon zircons and almandine garnets. However, it was not until 1932 that a...his own gemmological correspondence course in the USA, founded the Gemological Institute of America. In...breakthrough after the General Electric group in the USA announced its own successful synthesis of diamond...illumination. In the same year, Caroll Chatham in the USA began marketing synthetic rubies produced by a type |  | | Journal (issue) | | mistaken for the Thai ruby reaction. Almandite (almandine) is also said to appear grey through the filter;...Chatham synthetic emerald; I hydrothermally-grown Biron synthetic emerald; Ha natural emerald, Jos, Nigeria;...grown hydrothermally from alkalifree media Linde, Biron, Pool, Swarovski hydrothermally-grown synthetic...Pforzheim, FRG; FRG; Mr R. E. Kane of Santa Monica, USA; Dr J. Kanis of Cascais, Portugal; Mr E. Petsch of...alkali-rich beryl from the Harding pegmatite, Taos County, New Mexico. American Harding American Mineralogist |
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