 | | Journal (article/letter/editorial) | | testable. Introduction Most of the worldâs 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...deposits of the gem-quality variety sapphire in eastern Australia, eastern China, the Indochina region of southeastern |  | | Journal (issue) | | 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...Australian Argyle deposit. R.A.H. Evidence for crystals from the lower mantle: baddeleyite megacrysts of...of a TEM study on previously dated, cm-sized baddeleyite xenocrysts (Zr0 2 ) from the Mbuji Mayi kimberlite |  | | Report (volume) | | 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 __.._ |  | | Journal (issue) | | couple of famous localities: Spruce Ridge in King County, Washington (for quartz and pyrite) and the Rock...GOLD 10 cm Eagleâs Nest Mine Sage Hill, Placer County California, USA Ex M. Pospisil Collection Photo...release selections for sale! Dallas, Texas & Guilin, China info@iRocks.com Facebook.com/Arkenstone.iRocks |...such as painite, poudretteite, johachidolite, baddeleyite, serendibite and sinhalite, some of which can...reaches through Shan State up to the border with China (and about 65 km east of the city, amid the hills |  | | Journal (issue) | | 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...(here, ~1.5â 2.5 cm in diameter) are from a new deposit in the Kondoa District of Tanzania. Photo by Brendan...comparison with the gem corundum from Kenyaâs Dusi deposit (near Garba Tula; see, e.g., Simonet et al., 2004) |  | | Journal (issue) | | calcite bangles resembling jadeite|Large pink sapphire with diffusioninduced star|Mid-year 2016 Myanma...sapphires. These rubies recovered from the Aappaluttoq deposit weigh 0.29â2.53 ct and were characterized for an... ARTICLES Feature Articles 294 Ruby and Pink Sapphire from Aappaluttoq, Greenland By Christopher P....GemeWizard Ltd., Ramat Gan, Israel; Guanghai Shi, China University of Geosciences, Beijing; James E. Shigley...DK9000, released by DiKai Industrial (Shenzhen, China) in April 2016, is a pen-style thermoelectric probe |  | Giuliani, Gaston, Fallick, Anthony, Rakotondrazafy, Michel, Ohnenstetter, Daniel, Andriamamonjy, Alfred, Ralantoarison, ThĂŠogène, Rakotosamizanany, Saholy, Razanatseheno, Marie, Offant, Yohann, Garnier, Virginie, Dunaigre, Christian, Schwarz, Dietmar, Mercier, Alain, Ratrimo, Voahangy, Ralison, Bruno (2007) Oxygen isotope systematics of gem corundum deposits in Madagascar: relevance for their geological origin. Mineralium Deposita, 42 (3) 251-270 doi:10.1007/s00126-006-0105-3 | Journal (article/letter/editorial) | | The oxygen isotopic ratios (18O/16O) of ruby and sapphire from primary deposits are a good indicator of...wide spread between â0.3 and 16.5â°. The ruby and sapphire found in placers linked to alkali basalt environments...blue sapphire, syenite for yellow, green, and blue sapphire, and skarn in marbles for blue sapphire. Keywords... Oxygen isotopes . Corundum deposits . Ruby . Sapphire Miner Deposita (2007) 42:251â270 gem quality...ratios (18O/16O) in the lattice oxygen of ruby and sapphire to provide a gemstone geological identification |  | | Journal (issue) | | 4 Cover 1 Cinnabar, calcite. 4x Đ cm. Toltgin deposit, Guizhou Prov., Chinn. Fersman Mineralogical Museum...inclusions. ĐĄgophĐžtolиmiпоsceRĐľ (77Đ). Liaonin Province, China. Specimen: Yana Baa. (right) Photoluminescence of...the cracA offerruginous quartz. The KasmĐżnachi deposit, Kazakhstan. The photograph was taken Đ°Đł 77Đ, 20'...aĐżifĐłcial tutuine.scent coating. The Muruntau deposit, Uzbekistan. 10'. Specimen: V. Moroshkin. (left)...Đ Ń Ń across) with vacuoles. Liaonin Province, China, Specimen: Yana Bao. (left) Laser luminescence |  | | Book | | Kostitsyn and Vasiliy A. Kotlyarov Origin of Blue Sapphire in Newly Discovered SpinelâChloriteâMuscovite... and a Distinguished Visiting Professor at the China University of Mining and Technology. His research...on nontraditional critical element resources of China, intraplate basaltic volcanism, genesis of sapphires...around the globe. Ruby is the red variety and sapphire is the blue variety, while all other coloured...sapphires and need a colour preďŹx (e.g., pink sapphire, yellow sapphire). A comparative study of ruby chemistry |  | | Journal (issue) | | REGULAR FEATURES 212 Gem Trade Lab Notes â˘Gem baddeleyite â˘Conch âpearlsâ â˘13 ct datolite â˘Carved âHamsaâ...â˘Maw-sit-sit beads â˘Two unusual opals â˘Unusual star sapphire 220 222 2001 Challenge Winners Gem News International...Pala,California â˘Vanadium-colored green beryl from China â˘Statuette with a large natural blister pearl â˘Carpet...powellite â˘Anhydrite inclusion in ruby â˘Ruby and sapphire from Australia and northern Myanmar â˘âSpiderâ...â˘Synthetic ruby âcrystalâ from Sri Lanka â˘Medieval sapphire imitations 246 Book Reviews 249 Gemological |  | 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) | | uncommon on Earth but the gem varieties of ruby and sapphire are relatively rare. Gem corundum deposits are...to product from the Mugloto Mugloto colluvial deposit, which provided clean and very high-quality red...red stones with typical sizes colluvial deposit, which provided clean and very high-quality red stones...Gems Inc.Photo: (Vancouver, BC, True Canada). deposit, southwest Greenland. Courtesy North Gems Inc....Polonnaruwa; Elahera. Nepal: (47) Chumar, Ruyil. China: (48) Qinghai; (49) Elahera. Nepal: Chumar, Ruyil |  | | Journal (issue) | | Volume 36 / No. 8 / 2019 Sapphire Intaglio from Pompeii Chinese Synthetic Diamonds Trapiche Rubies...from Pompeii, Italy, proved to be a basaltic-type sapphire (see article on pp. 710â725 of this issue) and...ash. ARTICLES Gemmological Analysis of a Roman Sapphire Intaglio and Its Possible Origin 710 By Michael...Israel; Andy H. Shen, China University of Geosciences, Wuhan; Guanghai Shi, China University of Geosciences...Excellence in Research for Australia (ERA) Journal List; China National Knowledge Infrastructure (CNKI Scholar); |  | | Journal (issue) | | Origin of Montanaâs Alluvial Sapphires The Grand Sapphire: Provenance and Properties In Search of Australian...properties. 392 The Grand Sapphire of Louis XIV and the âRuspoliâ Sapphire: Historical and Gemological...characterization reveal the true story of this 135.74 ct blue sapphire from the French crown jewels. NOTES AND NEW TECHNIQUES...Colombian quartz ⢠Violetish blue spinel in yellow sapphire ⢠Stars in ParaĂba tourmaline 446 Gem News International...natural-color bluish green chalcedony ⢠Rubies from new deposit in Madagascar ⢠Plastic imitation of golden coral |  | | Report (chapter) | | Tract in Mandalay Division, the Mong Hsu ruby deposit in Shan State and imperial coloured jadeite jade...are ruby in marble (Mogok, Mong Hsu and Sagyin), sapphire in syenite pegmatite, syenite and nepheline syenite...area. Common secondary gemstones include ruby, sapphire, jadeite, diamond, spinel, zircon, aquamarine...Boulder Conglomerate. The second-largest ruby deposit in Myanmar occurs at Loi Hsan Tao Mountain, Mong...(Mogok, Mong Hsu, Sagyin); (2) skarn, ruby and sapphire in the contact zones between the marbles and the |  | | Journal (issue) | | Clear Creek, New Idria serpentinite, in San Benito County, California (Coleman, 1961) does not appear to...(Barnes and Mattison, 1981), overlain by a secondary deposit in which jadeite-bearing pebbles were discovered...jadeitites of the New Idria serpentinite (San Benito County, California) which contain quartz, lawsonite and...with jadeite from the Urals. Jadeite from Ural deposit (Ostrooumov, 1986) Jadeite Jd96[Di+Hd]4 Omphacite...Clear Creek area, New Idria district, San Benito County, California. Jour. Petrol., 2, 209â47 Foshag, W |  | | Journal (issue) | | oquamorine jrom Ajghonistan, courlesy of the Los Angeles County Museum of Noturol History, Los Angeles, CA). Cover...The alluvial sediments and an extensive gypsum deposit are of more recent origin. The topography of the...near San Carlos, i n Arizona, followed up by a deposit at Sondmore in Norway, which produces peridots...zirconium oxide (or zirconia), a compound lznown as baddeleyite when in the monoclinic form. So little did von...1977, 1980a), but it produced either monoclinic baddeleyite or a tetragonal form. On heating, the former |  | | Journal (article/letter/editorial) | | from the text by simply using the code of each deposit in the chart. This code can be created by combining... . . . . 3.4. Metamorphic chromium (gemstone) deposit . . . . . . . . . . . 3.5. Chromium supply and... . . . . . . . . 11.3. Structure-bound copper deposit . . . . . . . . . . . . . . . . . . . . . . . ...the only inexhaustible low-grade, large-tonnage deposit on earth? The ďŹrst step has already been taken...countries. The current situation in the Asian countries China and India is another example for the rightness of | | | Journal (article/letter/editorial) | | from the text by simply using the code of each deposit in the chart. This code can be created by combining... . . . . 3.4. Metamorphic chromium (gemstone) deposit . . . . . . . . . . . 3.5. Chromium supply and... . . . . . . . . 11.3. Structure-bound copper deposit . . . . . . . . . . . . . . . . . . . . . . . ...the only inexhaustible low-grade, large-tonnage deposit on earth? The ďŹrst step has already been taken...countries. The current situation in the Asian countries China and India is another example for the rightness of |  | | Journal (issue) | | Moissanite with the Reflectivity of Diamond | Black Sapphire Melee as a Black Diamond Imitation | A Convincing...Diamond Imitation Manufactured from Topaz | Basaltic Sapphire Heated with Pressure Cover photo: Demantoid has...Pattern and Presence of Macrosteps on Ruby and Sapphire Crystals from Aappaluttoq, Greenland 364 By...Pasadena, USA Andy H. Shen China University of Geosciences, Wuhan Guanghai Shi China University of Geosciences...Excellence in Research for Australia (ERA) Journal List; China National Knowledge Infrastructure (CNKI Scholar); |  | | Journal (issue) | | Green quartz with Brazil-law twinning ⢠Synthetic sapphire with unusual yellowish green bodycolor ⢠Spinel...recent G&G article on berylliumdiffused ruby and sapphire (J. L. Emmett et al., Summer 2003, pp. 84â131)...counterclockwise from top right, are a 5.37 ct purple sapphire, a 2.18 ct emerald, a 2.02 ct Fancy yellow diamond...vendor to extol the quality of color in an orange sapphire (figure 9), he or she would be creating a duty...re-treatment.â âBecause the finest colors of ruby and sapphire are so rare, heat treatment has traditionally |  | | Book | | Determination of the Geographic Origin of Ruby and Sapphire Using an Expanded Trace Element Suite Plus SrâPb...WolfgangHofmeister PetrogenesisoftheSnezhnoeRubyDeposit,CentralPamir Reprinted from: Minerals 2020, 10...Professor of Economic Geology at CODES (Centre of Ore Deposit and Earth Sciences), University of Tasmania, Hobart...mineral deposits in Canada, Australia, New Zealand, China and many parts of SE Asia (Vietnam, Laos, Cambodia...Sydney, NSW 2010, Australia CODESâCentre of Ore Deposit and Earth Sciences, University of Tasmania, Hobart |  | | Book (edition) | | Colorado, cubanite from Cuba, kernite from Kern County in California, aragonite from a former kingdom...the aluminum industry. and so the mineral land deposit, now is nearly invisible depleted, Crystals...commercially valuable substance. Named after Kern County, California, kernite evaporation yields borax...selenite from 48. salt, What which is Wayne County, glauberite? is sodium is known as selenite...Middleville, Little Falls, and elsewhere in Herkimer County, New York, that they have become known as "Herkimer |  | | Book (edition) | | 10 11 12 13 14 Diamond I Diamond II Ruby and Sapphire Beryl Chrysoberyl Spinel Topaz Tourmaline The...time, while diamonds have also been discovered in China in some quantity. Several new gem minerals, or minerals...knowledge. In the cases of emerald and ruby and sapphire new sources of supply have necessitated additional...this work of my articles on emerald, ruby and sapphire, and marble, as well as a number of illustrations...may scavenge and distill a range of elements and deposit these as economic concentrations of minerals or |  | | Book | | long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...Litchfield County. Ilmenite masses and crystals from somewhere near Washington, Litchfield County, were described...Lake Road occurrence, Faraday Township, Hastings County. In fall 1994, Dan and Shelley Lambert extracted...Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's finest ilmenite specimens |  | | Report (volume) | | described. Div. Mines, 1; Jenkins, O. P., Choctaw County, Highway 17 area: 3. Toulmin, L. D., Jr., 3. Minor:...D., 3. Talladega County, hematiteOklahoma, potash agstone, granite magnetite deposit: Pallister, and other...ground water: Powham, C. E. ell, W. J., 4. Marengo County: Newton, J. G., 1. Core-drilling program, ChattanooMica:...J.,4. Excursion, Tertiary type-localiMontgomery County: Reade, ties: Rainwater, E. H. , 1. H. L. , Jr...Harris, H. B. trolled: Braunstein, J., 3. Escambia County: Cagle, J. W. ,Jr. Pollard field: Jones, W. B. |
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