 | Franz, Gerhard, Vyshnevskyi, Oleksii, Taran, Michail, Khomenko, Vladimir, Wiedenbeck, Michael, Schiperski, Ferry, Nissen, Jörg (2020) A new emerald occurrence from Kruta Balka, Western Peri-Azovian region, Ukraine: Implications for understanding the crystal chemistry of emerald. American Mineralogist, 105 (2) 162-181 doi:10.2138/am-2020-7010 | Journal (article/letter/editorial) | | Mineralogist, Volume 105, pages 162–181, 2020 A new emerald occurrence from Kruta Balka, Western Peri-Azovian...Implications for understanding the crystal chemistry of emerald Gerhard Franz1,*, Oleksii Vyshnevskyi2, Michail...We investigated emerald, the bright-green gem variety of beryl, from a new locality at Kruta Balka, Ukraine...(apfu) is valid; only some samples such as the emerald from Kruta Balka deviate from this value (2.944...944 Be apfu). An important substitution in emerald (expressed as an exchange vector with the additive component |  | | Report (issue) | | our way through the compet itive minefield of emerald science, much of John's contribu tion to this...any other opinion. extraLapis English No. 2: Emerald The Most Valuable Beryl The Most Precious Gemstone...we • pay tribute to John Sinkankas to whom this emerald issue is dedicated. John Sinkankas wrote more...than 15 books including his 1981 definitive work Emerald and Other Beryls. He set standards for authors...Gloria & Gunther A 2001 Find of top-quality emerald crystals from La Pita at Maripi, Boyac |  | | Journal (issue) | | include nomenclature for lead-glass filled corundum, emerald clarity enhancement issues, Certification for Fair... Gemfields set emfields held its second rough emerald auction for undisclosed reserve prices for each...per carat AGTA Show The company indicated that emerald values decline dramatically as quality decreases...decreases and achievBooth # 1219 able prices for rough emerald varies widely from lower-quality to higher-quality...US$200 per carat. An auction of lower quality rough emerald and beryl is expected to be held in Jaipur, India |  | | Report (volume) | | ............................................... Talc ................. ................................Burke, McDowell, and Kutherford Counties; and the emerald and hiddenite discoveries. Minerals formerly supposed...and of a black color, had been found at the same locality by three persons while washing for gold. In their...report that a second one has been found at the same locality. A small diamond was found a few years ago in...crystals of a bright aurora red color occur with talc, rhodochrosite, etc., at the McMakin mine. As they |  | | Journal (issue) | | issue 2, 2009 I Vladimir I. Zhemakov URAL EMERALD MINES (Izumrudnye Kopi): Notes on Mineralogy Mineralogical...LOCAUTIES SERIES Vladimir Ivanovich Zhernakov Ural Emerald Mines: Notes on Mineralogy. Mineralogical Almanac...The current issue dwells on Mineralogy of Ural Emerald Mines: a deposit which Russain geologists and mineralogists...belongs to authors, 2009 0 Front Cover Photo Emerald President. 13.6 x 9.0 x 7.7 cm, weight 1172 g....found and produced for 180 years, is known as Emerald Mines (on Russian - /zumrudnye Kop1). This happened |  | | Journal (issue) | | problem, since Americans can read species and locality names in German well enough. However, when I visited...1000 specimens. Volunteers help too with refining locality information, an important function with a collection...something” would cover anything on or in the earth. The locality is the first and most important part of a label...one locality but through poor locality identifica tion might be reported from another locality as Zodac...minerals from Chester, Penn sylvania. Was the locality the city of Chester or Chester County? Worse still |  | | Journal (issue) | | beryllium-treated sapphires Asterism in beryl, aquamarine and emerald - an update Nephrite jade in Finland The Gemmological...1355-4565 65 Asterism in beryl, aquamarine and emerald an update Dr Karl Schmetzer1, Dr Lore Kiefert2...in beryl, aquamarine and emerald is presented. A bronze-brown beryl from Brazil and several aquamarines...revealing six-rayed asterism were examined. An emerald specimen from Madagascar showing four- and six-rayed...due to a combination of a six-rayed star emerald and an emerald cat's-eye. Three causes for six-rayed stars |  | | Journal (issue) | | tiny parisite crystal inclusion in a Colombian emerald discovered by Sir J a m e s Walton in 1950 (Walton...888-889. Walton, Sir James, 1950. A n Unusual Emerald. [Manuscript received 9th August, 1976.] Gemmologist...Lanka) and several fine brown gem tourmalines from Brazil prompted the author's interest in examining the...(most calcium-rich) gem uvites from each known locality are presented as Table I. The Ceylon gem material...compositions. Nineteen of the 24 samples from this locality have C a > Na and are thus uvites. The statement |  | | Book (edition) | | ::::::::::::::::::::::::::::::::::::::::~:::::::::::::: Brazil. ........................................................................................... . Emerald ................................................. Englis~ of Shelby, N. C., for information on emerald occurrences in North tJarolina. AGATE. MONTANA...St. Stephen stone variety of agate from a new locality 15 miles east of Indian Springs, San Bernarclino...amethystine chalcedony about 8 miles soul,h of this locality have been examined. The copper-stained variety |  | | Journal (issue) | | OCTOBER The 1955 EMERALD by ROBERT WEBSTER, F.G.A. T H E loveliness of the emerald of perfection colour...Dedicated by the ancients to the Goddess Venus, emerald is steeped in superstition a n d lore. Fittingly...the beauty a n d promise of nature in Spring ; emerald has been called the symbol of immortality, the...in adversity—and of kindness a n d of goodness. Emerald by changing its colour has been said to reveal...unwed. T h e fable, told by Pliny, that the emerald is beneficial to the eyes, may not be so completely |  | | Book | | manmade gems, however, are referred to as synthetic emerald, synthetic ruby, synthetic sapphire, synthetic...Ontario, Canada. The world's • most important emerald locality is limited to a small district near Muzo in...are: the tungsten ores of China; the quartz of Brazil; the diamonds of Africa; the gold of the Transvaal;...natural quartz, most of which is imported from Brazil. Synthetic minerals at times cost more than natural...of giant crystals reported are: 200-ton crystal; Brazil. Crystal 19 feet long and 5 feet in diameter; Black |  | | Book (edition) | | ing ................................•........ Emerald .................................................chrysoprase, and the discovery of a new and promising emerald prospect m North Carolina, of new variscite and...merchants in the southern California. cities. A new emerald prospect has been discovered in North Cnrolina...mottling in color. None of the material from this locality hns been sold, and no reo-ularwork hns been done...Endicott, of Canon City, Colo., from the Curio Hill locality and the Dinosaur beds near Cnnon City. These agates |  | | Book (edition) | | Salinas, Peru, H Variscite, xx 5 mm, Iturnbiara, Brazil, H Rhodocbrosite, polished, 50 mm, Capillitas,... China, H Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Ethiopia, G Page 12: Brazilianite, 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California...reflected light (e.g. micas). or flexible (e.g. talc) minerals. In crystal optics for reflected light...ability of a mineral to scratch another one: 1 - talc, 2 - relative ability of an opaque mineral to reflect |  | | Book | | Trimouns quarry, Luzenac, Ariege. Operated for talc since the beginning of the 20th century, the Trimouns...crystalline talc. Easily the best extant crystal, a doubly terminated floater found in a talc vug in 1997...crystals of edingtonite were first found in 1978. The locality has yielded lustrous, tabular crystals of ilmenite...mineral was then called "washingtonite," after the locality. For the rest of the 19th century and well into...largest known single ilmenite crystal from any locality worldwide. The crystals are blue-black and lustrous |  | | Journal (issue) | | Characterization of the New Malossi Hydrothermal Synthetic Emerald Ilaria Adamo, Alessandro Pavese, Loredana Prosperi...Ajò Reports on a hydrothermally grown synthetic emerald manufactured since 2003 in the Czech Republic....blueschist from northern Italy • Emerald phantom crystal • Unusual trapiche emerald earrings • Large greenish...the market. More recently, the use of different emerald fillers, of lead-glass fillers in rubies, and the...in Colombian emeralds, and pyrite in quartz or emerald (figure 4, middle). 1967 1968 1967 Publishes |  | | Journal (issue) | | you will be a friend of mineralogy. The Locality If the locality is known, and if the material is self-collected...slightest doubt about the exact locality, or precise site at the locality, the collector should communicate...If the collector is unwilling to disclose the locality, then he should state this frankly before the...correct and site-specific mineral locality information. If the locality is known simply from specimen labels...north-central New Mexico. This well-known collecting locality was donated to the university.by Arthur Montgomery |  | | Journal (issue) | | Karfunkel, L. S. C. Chaves, A. Banko & L. Irran Emerald and associated minerals from A Franqueira, Pontevedra...crystal, 18 cm, from the Xanda mine, Virgem da Lapa, Brazil. Swoboda collec tion, now in the Houston Museum...mineral-rich Brazil, so he went to work in a Long Beach grocery store and saved his money. BRAZIL AND BEYOND...figured he had enough money put away for the big Brazil trip. He drove from California to Louisiana in...rutilated quartz crystals. In 1941 Ed, still in Brazil, was on a year-and-a-half expedition into the Matto |  | | Book (volume) | | TAGE TAGE Occurrence of Diamond 1. India .... 2. Brazil .... 3. South Africa 4. Borneo 5. Australia 0....Spinel. Chrysoberyl Cymophane Alexandrite Beryl . Emerald . Precious beryl (Aq uamarine, ive.) . Euclase... ?! 8. 9. 162 Diamond, crystal in matrix : Brazil. 2. „ 190 S. Africa 125 125, 173 ..... 265... PLATE VI. (Facing p. 168.) DIAMOND-WASHING IN BRAZIL . . . 168 PLATE VII. (Facing p. 198.) KIMBERLEY...(from South Africa) . . c. Mr. Dresden’s (from Brazil) . famous diamonds PLATE III. (Facing p. 76 |  | | Book | | Occurrence: The Americas 63 USA 64 Mexico 72 Panama 75 Brazil 75 Canada 80 7 Occurrence: Rest of the world 81...quartz crystals come from the State of Minas Gerais, Brazil, and occur in vugs or pockets which are found in...growth condition but it has been observed that Brazil twinning (see below) is very frequent in amethyst...Figure 2.6 Examples of Dauphine twinning Brazil twinning In Brazil twinning the parts are related by reflection...been found to be composed of regular polysynthetic Brazil twins as thin lamellae parallel to the terminal |  | | Journal (issue) | | Glass Doublets | Imitations of Trapiche Ruby and Emerald | Blue Sapphire with Partial Red Surface Diffusion...jewels created by Paula Crevoshay, and gems from Brazil, Colombia and elsewhere. Visit www. dallassymposium...and alexandrite, colour-change gems, diamond, emerald and other beryls, feldspar, ruby and sapphire,...(Gaillou et al. 2008), West Africa (Moe 2012) and Brazil (Laurs & Renfro 2018). At the June 2014 Sainte-Marie-aux-Mines...yellow opals documented from Mexico, West Africa and Brazil, which all consist of opal-CT. Dr Ján Štubňa (janstubna@gmail | | | Journal (issue) | | you will be a friend of mineralogy. The Locality If the locality is known, and if the material is self-collected...slightest doubt about the exact locality, or precise site at the locality, the collector should communicate...If the collector is unwilling to disclose the locality, then he should state this frankly before the...correct and site-specific mineral locality in formation. If the locality is known simply from specimen labels...north-central New Mexico. This well-known collecting locality was donated to the university by Arthur Montgomery |  | | Book (volume) | | enjoying top rank. The enormous variety and wealth of locality information concerning quartz gemstones are recognized...which provides a quick method of referring to any locality in the book. JS: Arlington, Virginia. June,...Geological Survey of Canada, while specific Canadian locality information was supplied by Dr. Victor Ben Meen...provided two excellent photographs of the Kobuk jade locality. Descriptions of San Diego County, California...Drawing of beryl crystal form . An emerald crystal . Turner Emerald Mine . Mt. Antero aquamarine matrix |  | | Journal (issue) | | specimens, and was said to always provide detailed locality data (since he personally collected many of the...seen a Boodle Lane mineral label; did he give the locality data only verbally, if asked? Or does a reader...field mineralogist for the Manhattan Project in Brazil in 1941, and served in the Army Signal Corp in...specimens of a particular mineral from a certain locality, or even from multiple localities, and that provides...been visiting mines and mineral occurrences in Brazil for 36 years, and has seen many now-famous discoveries |  | | Book (volume) | | Gemstones 2 Diamond 3 Ruby and Sapphire 4 Emerald, Aquamarine and Other Beryls 5 Chrysoberyl and...Fancy Coloured Sapphires . : : : : ; : F a fe” Emerald: Crystal in Rock and Cut Stones ; = 82 : 00)...the incorporation in this work of my articles on emerald, ruby and sapphire, and marble, as well as a number...transparency and depth of colour as in the ruby or the emerald; through colour alone as in the turquoise; or through...scarce. This is so in the case of the emerald. A flawless emerald of fine colour is exceedingly rare and |  | | Report (issue) | | dravite dumortierite dyscrasite Edenite elbaite emerald* enstatite 52,54,56,58,61,69,72 32 26,28,'3 I...strengite strUverite sulfur sylvanite sylvite Taaffeite talc tavorite tengerite-(Y) tephroite tetrahedrite thermonatrite...blue beryl, emerald, ruby and sapphire. He even published a map on which a quartz locality was depicted...rhodizite bearing pegmatites. At the famous tourmaline locality Anjanabonoina, there are natives who are capable...describing the exact locality. I n 1 922 Lacroix wrote, "A characteristic of many Malagasy locality names is that |
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