 | 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) | | minerals Review Ruby Deposits: A Review and Geological Classification Gaston Giuliani 1, *, Lee A. Groat...is not uncommon on Earth but the gem varieties of ruby and sapphire are relatively rare. Gem corundum deposits...classification scheme for ruby deposits is described in the present paper. Ruby forms in mafic or felsic...geological environments are favorable for the presence of ruby: (1) amphibolite to medium pressure granulite facies...volcanism in continental rifting environments. Primary ruby deposits formed from the Archean (2.71 Ga) in Greenland |  | Giuliani, Gaston, Fallick, Anthony, Rakotondrazafy, Michel, Ohnenstetter, Daniel, Andriamamonjy, Alfred, Ralantoarison, Théogène, 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) | | isotope systematics of gem corundum deposits in Madagascar: relevance for their geological origin Gaston...d’Antananarivo, Ambohitsaina, BP 906, Antananarivo 101, Madagascar Y. Offant Cerege, Europole Méditerranéen de l’Arbois...Ambaranjana Antanimora, Antananarivo 101, Madagascar ces in Madagascar to provide a gemstone geological identification...characterization. Primary corundum deposits in Madagascar are hosted in magmatic (syenite and alkali basalt)...karsts. The oxygen isotopic ratios (18O/16O) of ruby and sapphire from primary deposits are a good indicator |  | | Book | | Mineralogy and Geochemistry of Ruby Edited by Frederick Lin Sutherland and Khin Zaw Printed Edition... Mineralogy and Geochemistry of Ruby Mineralogy and Geochemistry of Ruby Editors Frederick Lin Sutherland...the Special Issue “Mineralogy and Geochemistry of Ruby” published online in the open access journal Minerals... vii Preface to ”Mineralogy and Geochemistry of Ruby” . . . . . . . . . . . . . . . . . . . . . . . ...for Special Issue “Mineralogy and Geochemistry of Ruby” Reprinted from: Minerals 2020, 10, 888, doi:10 |  | Wang, Kandy, Graham, Ian, Martin, Laure, Voudouris, Panagiotis, Giuliani, Gaston, Lay, Angela, Harris, Stephen, Fallick, Anthony (2019) Fingerprinting Paranesti Rubies through Oxygen Isotopes. Minerals, 9 (2) 91 doi:10.3390/min9020091 | Journal (article/letter/editorial) | | an earlier study on on Paranesti [18],[18], the ruby-bearing occurrences were found Based earliersystematic...earliersystematic systematic study Paranesti the ruby-bearing occurrences were to be hosted pargasite schist withschist...found schist to mainly comprised of clinochlore. The ruby-bearing occurrence non-corundum-bearing chlorite...Locality Locality diagram diagram of of the the ruby rubyoccurrences. occurrences. (a) (a) PAR-1 PAR-1...(d)Pegmatite Pegmatiteon ontop topof ofthe theruby-bearing ruby-bearingpargasite pargasiteschist schistatatPAR-1 |  | | Journal (article/letter/editorial) | | East African rift (Krzemnicki et al. 1996), in Madagascar (Schwarz et al. 2000; Giuliani et al. 2007a)...“metamorphic” are pastel (blue, pink, orange) to ruby red, and are enriched in chromium and poorer in...Reference collection δ18O (‰) (V-SMOW) references Ruby in amphibolite Peygerolles (Haut-Allier) Sapphires...(δ18O=8.7 and 10.25‰), and Le Bras (δ18O=13.9‰). The ruby in the pargasite-anorthite amphibolite of Peygerolles...value falls within the worldwide range defined for ruby in mafic-ultramafic rocks: 3.2<δ18O<6.8‰, n=20 (Giuliani |  | | Journal (article/letter/editorial) | | Fingerprinting of corundum (ruby) from Fiskenæsset, West Greenland Nynke Keulen and Per Kalvig morphosed...(Figs 1, 2A). Red corundum of gem quality is called ruby; gem quality corundum of other colours (e.g. pink...showing the investigated pink and red corundum (ruby) localities in the Fiskenæsset complex. Map after...B 60 80 20 20 80 40 60 60 40 60 20 Soamiakatra Ilakaka Andilamena Pailin (P) Pailin (C) Bo Rai...Greenland and from internationally, well-known, ruby occurrences. Samples from Fiskenæsset show a considerably |  | Garnier, V., Ohnenstetter, D., Giuliani, G., Fallick, A. E., Phan Trong, T., Hoàng Quang, V., Pham Van, L., Schwarz, D. (2005) Basalt petrology, zircon ages and sapphire genesis from Dak Nong, southern Vietnam. Mineralogical Magazine, 69 (1) 21-38 doi:10.1180/0026461056910233 | Journal (article/letter/editorial) | | erosional deposits in southeast Asia, Australia and Madagascar. The basalt ®elds yielding corundums are widespread...variously pinkish to purple, pastel blue sapphires and ruby; their mineral inclusions are similar to metamorphic...rocks. New oxygen isotopic data on sapphire and ruby originating from different kinds of protolith possibly...deposits of Dak Nong. The Dak Nong sapphire-mining district lies in the Dak Lak Province near the Cambodian...blue, green to yellow and colour-zoned. There is no ruby but some ``trapiche-like'' blue sapphires were found: |  | Voudouris, Panagiotis, Mavrogonatos, Constantinos, Graham, Ian, Giuliani, Gaston, Melfos, Vasilios, Karampelas, Stefanos, Karantoni, Vilelmini, Wang, Kandy, Tarantola, Alexandre, Zaw, Khin, Meffre, Sebastien, Klemme, Stephan, Berndt, Jasper, Heidrich, Stefanie, Zaccarini, Federica, Fallick, Anthony, Tsortanidis, Maria, Lampridis, Andreas (2019) Gem Corundum Deposits of Greece: Geology, Mineralogy and Genesis. Minerals, 9 (1) 49 doi:10.3390/min9010049 | Journal (article/letter/editorial) | | plumasite, 20.5‰ for sapphire in marble and 1‰ for ruby in mafics. The fluid inclusions study evidenced...potential gemstones. Keywords: corundum megacrysts; ruby; sapphire; plumasite; metamorphic-metasomatic origin;...volcanism (65–1 Ma) [2,4–10]. Magmatic and metamorphic ruby and sapphire deposits related to the Pan-African...Pan-African orogeny are present in southern Madagascar, East Africa, South India and Sri Lanka; those related to...sapphires occur in Australia, northern and central Madagascar, Nigeria, Cameroon, French Massif Central and |  | Keulen, Nynke, Thomsen, Tonny B., Schumacher, John C., Poulsen, Majken D., Kalvig, Per, Vennemann, Torsten, Salimi, Rita (2020) Formation, origin and geographic typing of corundum (ruby and pink sapphire) from the Fiskenæsset complex, Greenland. Lithos, 366. 105536pp. doi:10.1016/j.lithos.2020.105536 | Journal (article/letter/editorial) | | Formation, origin and geographic typing of corundum (ruby and pink sapphire) from the Fiskenæsset complex...Formation, origin and geographic typing of corundum (ruby and pink sapphire) from the Fiskenæsset complex...FROM THE FISKENÆSSET COMPLEX, TYPING OF CORUNDUM (RUBY AND PINK SAPPHIRE) GREENLAND Nynke Keulen1,* ntk@geus...the same rubies, with the aim of connecting the ruby-forming metamorphic reaction to a unique fingerprint...pegmatitic fluid, giving colour to the rubies. The ruby-forming reaction occurs at about 640 °C and 7 kbar |  | | Journal (issue) | | courtesy of Rio Tinto; (4) an 11.16 ct sapphire from Madagascar, GIA Collection no. 31618; (5) a 1.01 ct yellow...collection, courtesy of Aurora Gems; (6) a 9.15 ct ruby from Winza, Tanzania, courtesy of Hakimi & Sons;...from other fields. Likewise, beryllium diffusion of ruby and sapphire brought together geologists, gemologists...competitive rough diamond market. Political problems in Madagascar and a ban on gem exports from Myanmar disrupted...disrupted supply channels for sapphire and ruby. And the proliferation of new sales avenues, through the Internet |  | | Journal (issue) | | and Hope Diamonds . . . Opals from Ethiopia—and Madagascar Composite Turquoise . . . Microtomography of...114 New Occurrence of Fire Opal from Bemia, Madagascar Martina Simoni, Franca Caucia, Ilaria Adamo,...Pectinidae family • More on ruby from Cabo Delgado, Mozambique • Update on ruby, sapphire, and spinel mining...pietersite • Composite coral bangle • Lead glass–filled ruby in antique jewelry • Gems set with colored adhesive...the proximity to San Diego’s historic pegmatite district, we will offer field trips to working gem mines |  | 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) | | Available online 3 June 2008 Keywords: Basalt Sapphire Ruby Zircon Continental margins West Pacific A B S T...our knowledge of the basalt-derived gem sapphire–ruby–zircon deposits. In this paper we focus on the Late... E., 2003. Ar–Ar and U–Pb ages of marble-hosted ruby deposits from Central and South-east Asia. Geophysical... Hoang Quang, V., 2005a. Age and significance of ruby-bearing marble from the Red River Shear Zone, Northern...200–215 Fig. 2. (A) View of palaeoalluvial open-cut ruby mining operations, Gummi Flat, Barrington Tops, |  | | Journal (issue) | | determination. 580 Geographic Origin Determination of Ruby Aaron C. Palke, Sudarat Saeseaw, Nathan D. Renfro...Renfro, Ziyin Sun, and Shane F. McClure The world ruby market has undergone dramatic change in recent years...years, especially with the development of ruby mining in Mozambique. This contribution outlines GIA’s methods...criteria for establishing the geographic origin of ruby. p. 637 614 Geographic Origin Determination of...Sri Lankan sapphire crystal, a 10.90 ct Burmese ruby, and an 11.11 ct Sri Lankan alexandrite. Courtesy |  | | Book | | Mazlinfalina Mohd Zin and Stephen J. Harris Diversity in Ruby Geochemistry and Its Inclusions: Intra- and Inter-...(Itabira), Colombia (Coscuez), Ethiopia (Shakisso), Madagascar (Mananjary), Russia (Ural mountains), Zambia...can be found in various places around the globe. Ruby is the red variety and sapphire is the blue variety...sapphire, yellow sapphire). A comparative study of ruby chemistry and inclusions between Myanmar and eastern...; Nu, T.T.; Zin, M.M.; Harris, S.J. Diversity in Ruby Geochemistry and Its Inclusions: Intra- and Inter- |  | | Journal (article/letter/editorial) | | Cordierite/iolite Cordylite-(Ce) Coronadite Corundum, sapphire, ruby, padparadscha Corvusite Covellite Crandallite Crocidolite...abrasive, Cr and Fe contents may turn α Al2O3 into ruby, displaying different shades of red, and Fe and...expert is often hard to distinguish from natural ruby, is a swindle. Despite a great deal of mineralogical...sediments but rarely in volcanic rocks e.g., Cobalt district of Ontario, Canada, Wittichen, Richelsdorf, Bieber...Jachymov, Czech Republic, Black Hawk District, USA, Batopilas District, Mexico (Fig. 04.01). These vein-type | | | Journal (article/letter/editorial) | | Cordierite/iolite Cordylite-(Ce) Coronadite Corundum, sapphire, ruby, padparadscha Corvusite Covellite Crandallite Crocidolite...abrasive, Cr and Fe contents may turn α Al2O3 into ruby, displaying different shades of red, and Fe and...expert is often hard to distinguish from natural ruby, is a swindle. Despite a great deal of mineralogical...sediments but rarely in volcanic rocks e.g., Cobalt district of Ontario, Canada, Wittichen, Richelsdorf, Bieber...Jachymov, Czech Republic, Black Hawk District, USA, Batopilas District, Mexico (Fig. 04.01). These vein-type |
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