 | | | | amianthus, blue 100 -amianthus, Cape 100 amphibole group 98 annabergite 73 arduinite 119, /2/ argentite...dialogite 42, 42 diamond 5, 6 galena 12, /3 garnet group 76 garnierite 107 gaylussite SO gehlenite 85...97, 98 fayalite 75 feldspars 111 feldspathoid group 108 ferrierite 122 ferrimolybdite 63 fluoborite...119 metacinnabarite 13 meyerhofferite 54 mica group 104 mica, white 104 microcline 112, //3 millerite...102, /03 pyroxene group 96 pyrrhotite 12, /2 siberite 96 siderite 42 silica group 31 silicates 75 sillimanite |  | | Book | | amianthus, blue 100 _amianthus, Cape 100. amphibole group 98 analcite 76, 108, 111 anatase 34, 34 andalusite...coquimbite 60 cordierite 95 galena 12, 13 garnet group 76 garnierite 107 gaylussite 50 gehlenite...eye 31 fayalite 75 feldspars 111 feldspathoid group 108 ferrierite 122 ferrimolybdite 63 fluoborite...119 metacinnabarite 13 meyerhofferite 54 mica group 104 mica, white 104 microcline 112, /13 millerite...pyrolusite 34 pyrope 76 pyrophyllite 102, 103 pyroxene group 96 pyrrhotite 12, /2 quartz 28, 31, 95 nepheline |  | | Journal (issue) | | cover: Top row, from left: Euclase, 2.3 cm, from the GachalĂĄ mine, GuaviĂł-GuatĂŠque mining district, BoyacĂĄ...cleavelandite, 4.3 cm, from Stak Nala, Haramosh Mountains, Skardu district, Gilgit-Baltistan, Pakistan. Zach Goodman...photo. Middle row, from left: Cassiterite twin, 5.5 cm, from the Amo tin deposit, Ximeng County, Yunnan, China...Merelani mine near Arusha, Tanzania. Barry & Beth Kitt collection; James Elliott photo. Bottom row, from...2.2 cm, from the Pulsifer quarry, Androscoggin County, Maine. Kyle Kevorkian collection; Jordan Root | | | Book | | arnianthus, blue 100 ...amianthus, Cape 100 amphibole group 98 analcite 76, 108, I 11 anatase 34, 34 andalusite...fassaite 97, 98 fayalite 75 feldspars 111 feldspathoid group I08 ferrierite 122 ferrimolybdite 63 fluoborite...gadolinite 85 gahnite 24 galaxite 24 galena 12, 13 garnet group 76 garnierite 107 gaylussite 50 gehlenite 85...mesotype 119 metacinnabarite 13 meyerhofferite 54 mica group 104 mica, white 104 microcline 112, 113 miJlerite...68, 68 pyrope 76 pyrophyllite 102, 103 pyroxene group 96 pyrrhotite 12, 12 quartz 28, 31, 95 quartz, amethyst |  | | Journal (issue) | | Mexico communities. October 2-6âSan Bernardino County Fair, Victorville, California. October 3-4âFeast...El Cajon, Calif., for information). October 7-13âNevada State Amateur Golf Tournament, Las Vegas, October...Annual Trailer Rally, Palm Springs, California. Pima County Fair, October 25-28 Tucson. October 26â'49ers Celebration...31âAnnual Chaves County Youth Parade and Hallowe'en Festival, Roswell, New Mexico. October 31âNevada Day, Parade...w l e d g e 14 Cooking for Twenty At a Mercury Mine By BETTY WASHLAKE . M a r i n e Treasures From the |  | | Book (volume) | | Other Feldspar Gemstones 10 Gems of the Silica Group including Amethyst, Agate and Opal 11 Turquoise...Peridot: Crystal and Cut Stones : 96 â ; : Garnet: Crystal and Cut Stones of Pyrope, Hessonite, Demantoid...2 PREFACE For two decades, an earlier work of mineâPractical Gemmologyâhas proved a useful elementary...some reason, the stones are better placed in a group form- | ing a small subchapter. In the technical...the Cultured Pearl Company, and those of diamond mining by the Anglo-American Corporation. ROBERT WEBSTER |  | | Book (edition) | | along with some new varieties, such as malaya garnet. Previously unknown localities have yielded large...text most used by an increasingly large and active group of gemstone collectors who are fascinated by the...certain colors of garnet are currently selling at prices over $1 ,000 per carat. Garnet has always been...cases the text lists only the pervasive rences, mining and cutting techniques, or market and or especially... CRYSTAL STRUCTURES AND PROPERTIES types. A group of atoms held together by bonds in such a way form |  | | Journal (issue) | | colours E-L from manufacturer B (top row) and manufacturer A (bottom row). 6. To minimize confusion when...including the total average error in comparing the group of four sets from each manufacturer, do indicate...determination whether each CZ is within or at the top of its grade. This measure scores each CZ as either...either zero error if a stone is within or at the top of its stated grade or, if outside the grade, the number...to examine, we provide all of the essentials for top-quality training. Our workshops are held from 10:00 |  | | Journal (issue) | | Documents a visit to the sapphire, opal, and emerald mining and trading areas of Ethiopia. REGULAR FEATURES...in opal ⢠Trapiche-like ruby from the Batakundi mine in Kashmir ⢠Sapphire inclusion with rutile âsilkâ...Gem News International Tucson 2019 ⢠Boulder opal mining ⢠Brazilian alexandrite ⢠Catâs-eye nephrite from...from Washington ⢠Color-change pyrope garnet ⢠Colombian emerald and Mozambican ruby ⢠Colored stone trends...Moonstone jewelry ⢠Oregon sunstone ⢠Potentate mine sapphire update ⢠âRainbow latticeâ feldspar ⢠Responsibly |  | | Book (volume) | | ;. .. ~ L-- -~ \. ⢠.J_..::.; I Volume 2: Mining History, Gems, and Geology edited by Vandall T...Marvinney, State Geologist of Maine Volume 2: Mining History, Gems, and Geology Edited by Vandall........... 9 Carl A. Francis Selected of Maine Mining and Minerals . ...................................... 17 Vandall T. King Early Hist01y of Maine Mining and Minerals .................................................... 197 References Cited on Maine Mining Hist01y ...................................... |  | | Journal (issue) | | visit www.gem-a.com Major sponsor Sponsor Image (top) courtesy of Business Design Centre. ⢠Supporters...Andradite from Arizona, USA | Bobdownsite | Orange lizardite | Large quartz from Arkansas, USA | Gold-included...spessartine inclusion | Tourmaline from the Cruzeiro Mine, Brazil | Natural diamond showing a âsyntheticâ...Edward Boehm, RareSource, Chattanooga, Tennessee, USA; Alan T. Collins, Kingâs College London; John L....Emmett, Crystal Chemistry, Brush Prairie, Washington, USA; Emmanuel Fritsch, University of Nantes, France; |  | | Book | | Pape HARRIS COUNTY PUBLIC LIBRARY , | 3 4028 04886 â ; â4 : BP ae - ms bs . -a i 7 : ; -...Designed by McDonald's Jewelry, Fresno, California (USA). Collection: Michael M. Scott, San JosĂŠ, California...from William Larsonâs Stuart Mine in the Pala Mountains, California (USA). Next to it, a step-cut, red-green...octahedral diamond crystal sits on an ultramafic garnet-lherzolite. It came out of the volcanic kimberlite... Collection: Houston Museum, Houston, Texas (USA). Photo: Erica and Harold Van Pelt, Los Angeles. |  | | Journal (issue) | | $384/three years, (Canada) $231/one year, (outside USA other than Canada) $325 for one year Subscription...you to become a Fellow and join this important group and Wear the medallion with pride! Contact Tom...Spruce Ridge in King County, Washington (for quartz and pyrite) and the Rock Candy mine in British Columbia...amethyst scepter mine in Montana, the Fluorita Dulcita prospect in Arizona, Garnet Ledge in Alaska, and...most important and evocative artifact of early mining in the American West.â Hardcover, sewn binding |  | | Journal (issue) | | gemological properties. Lesser a m o u n t s of garnet, a m e t h y s t , spinel, a n d morganite h a... and rubyincluding the locations of the mines, mining methods, gemological properties, and some production...been found in the southern portion of the Sorobi district, in Kabul Province. The topography of the region...towering Hindu Kush mountain range (figure3 ) .These mountains form the western end of the Himalayas, which stretch...one of the most rugged areas of the world, with mountains reaching up to 6,000 m (19,500 ft.) separated |  | | Journal (issue) | | Jeffrey R. Hapeman, and Richard B. Berg Examines the mining history and geological characteristics of the three...FEATURES 72 Lab Notes Purple anhydrite ⢠Pink pyrope garnet ⢠Libyan Desert glass bangle ⢠Atypical bead cultured...diamond ⢠Starry night in diamond ⢠Xenomorphic garnet in diamond ⢠Arrow-patterned negative crystals...Greenland ⢠Sweet Home mine rhodochrosite ⢠New tourmaline find in San Diego County ⢠Vibrant green âTransvaal...supply chain practices ⢠Luminescent synthetic garnet-like crystals ⢠Exhibits by the GIA Museum and |  | | Journal (issue) | | Stockton Gem-Quality Red Beryl from the Wah Wah Mountains, Utah l a m e s E. Shigley and Eugene E. Foord...to the sapphire above and the 2.67-ct demantoid garnet below by two red spinels. Yellow sapphire is discussed...are perhaps the most intriguing members of the garnet group. Much interest has developed over these garnets...article in this series and will include the present group of stones as well as all the other garnets that...of colors o{ this collection in 170th fluorescen~(top) and incondescent (bottom) illumination. The GIA |  | | Book | | The Hamlyn Publishing Group Limited, a division of the Octopus Publishing Group, Michelin House, 81 Fulham...Andrew Clark. Copyright Š The Hamlyn Publishing Group Limited 1990 All rights reserved. No part of this...anything occurring in the Earthâs crust, but one group of meteorites, the chondrites (see page 26), have... kimberlite, which forms pipe-like intrusions, garnet peridotite inclusions are found. These are more...the minerals described above, they contain garnet, the mica, phlogopite, and occasionally diamonds |  | | Journal (issue) | | ARTICLES An Update on Imperial Topaz from the Capio Mine, Minas Gerais, Brazil Daniel A. Sauer, Alice S....centuries. Today, the Capiio mine is one of the most productive in the region. This mine and the superb topazes...Shane F. McClure-on Brazil's Cap50 Imperial topaz mine-is the type of locality project he would have pursued...Alice S. Keller, and Shane F. McClure T h e Capiio mine is one of the oldest and most productive fully mechanized... of the Topkio Imperial Mining Company, for the invitation to visit the mine and for providing information |  | | Journal (issue) | | renowned gem experts, network with some of the worldâs top gemmologists and attend exclusive seminars and trips...history of gemstones Jim Clanin The fundamentals of mining for coloured gemstones and mineral specimens Dr...the Chivor emerald mine Bill Larson Gemstones and gem mining in San Diego County, California To book...Edward Boehm, RareSource, Chattanooga, Tennessee, USA; Alan T. Collins, Kingâs College London; John L....Emmett, Crystal Chemistry, Brush Prairie, Washington, USA; Emmanuel Fritsch, University of Nantes, France; |  | | Journal (issue) | | inclusions ⢠Unusual orange pyrope-spessartine-grossular garnet ⢠New plastic opal imitation from Kyocera ⢠Natural...gem market ⢠Oregon sunstone ⢠Kenyan tsavorite mining ⢠Arkansas turquoise ⢠Vibrant colors on display...add GST. Discounts are available for renewals, group subscriptions, GIA alumni, and current GIA students...hues. The diamonds in the rings (clockwise from top) are a 4.17 ct Fancy Vivid yellowish green, a 10...green, respectively. The unmounted diamonds in the top row are a 1.42 ct Fancy Vivid bluish green, a 1.01 |  | | Journal (issue) | | Democratic Republic of the Congo | Colour-Change Garnet Showing Blue Colouration from Kamtonga, Kenya |...Shaokui Pan Comparison of Emeralds from the Chitral District, Pakistan, with other Pakistani and Afghan Emeralds...Nineteenth Annual Sinkankas Symposium: San Diego County Gems and Minerals Learning Opportunities 625...Alonso-Perez Harvard University, Cambridge, Massachusetts, USA Alan D. Hart Gem-A, London Karl Schmetzer Petershausen...Edward Boehm RareSource, Chattanooga, Tennessee, USA Brian Jackson National Museums Scotland, Edinburgh |  | | Book | | their uncut shapes, and final settings, their mining and polishing. A glossary of technical terms gives...Spring Chrysoberyl: The Three Dissimilar Brothers Garnet and Its Paladins Moonstone: Child of the Dawning...closely related to one another: the formation of mountains and the uprise of molten masses, so-called magmas...fluorite, belong chiefly the varieties of the quartz group: amethyst, rock crystal, smoky quartz, and citrine...the metamorphic cycle, which included the large group of the crystalline schists. They originated from |  | | Journal (issue) | | from Afghanistan ⢠Serpentine catâs-eye ⢠Zircon mining in Cambodia ⢠Conference reports S1 Letters ...subscribers should add GST. Discounts are available for group subscriptions, renewals, GIA alumni, and current...included: (top row, left to right) Robert Shipley Jr., Sydney Ball, and Edward Wigglesworth; (middle row, left...Edward GĂźbelin, and George Switzer; and (bottom row, left to right) Robert Webster, G. Robert Crowningshield...able to draw on the talents of experts such as mining engineer Sydney Ball and Edward Wigglesworth, director |  | | Book (edition) | | native, sifting pebbles in an in Indian diamond mine, found one of the world's most famous diamonds....decided to smuggle would be rich it out of the mine. and would never again need to he could If ...cloth around guard at the gate. he was out of the mine, the where he hoped for the nearest port city...thirty-four ingredients emerald, sapphire, topaz, pearl, garnet, ruby, amber and One coral. suspects it This...birthstones: Septemberâ Sapphire Juneâ Pearl, Januaryâ Garnet Februaryâ Amethyst Moonstone, or Marchâ Aquamarine |  | | Journal (issue) | | ($250,000) Monday Debate Centers The Steinmetz Group Instore Magazine GIA's 75th Diamond Anniversary...Full-Day Sponsor, Monday, August 28 H2 Events SAFDICO USA INC Cappuccino Kiosk Full-Day Sponsor, Tuesday...Professional Jeweler ABN Amro Bank/ The VNU Jewelry Group Monday Afternoon Interlude Opening Session with...By My Way Jewelry Co. Inc. Hotel Key Cards TJF Group (in collaboration with Vicenza Fair on the Italian...Block Insurance Tuesday Debate Centers Rapaport Group of Companies CybercafĂŠ GRC Travel Grant Sponsorships |
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