 | 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 |  | | Journal (article/letter/editorial) | | California, and many of those in Minas Gerais, Brazil, are noted for them. Beautiful specimens of variously...Mineral Treasures. Phenakite from this exceptional locality has been chosen as the featured mineral in this...central United States. It occurs at the topaz locality at Lord’s Hill, Stoneham, and is reported from...to a non-phenakite locality but later confirmed to be from this Colorado locality by Dr. Fred Pough when...Penfield and Sperry 1888; Kunz 1890). The best-known locality is Mount Antero and secondarily nearby Mount White |  | | 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 (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 (article/letter/editorial) | | The emerald deposit at Byrud, Eidsvoll, South Norway Fred Steinar Nordrum, Kongsberg, and Gunnar Raade...Introduction In Scandinavia, just one occurrence of emerald has been mined, located at the Byrud farm on the...specimens. History The initial discovery of the emerald occurrence is not documented, but it probably took...pieces with translucent crystals of green beryl (emerald). At a later stage, the name Gustaf Nauckhoff (1847-1919)...(Cameron 1963). She hammered out a specimen with an emerald crystal. At her next visit she brought a miner |  | | Journal (issue) | | Peter C. Keller Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Governador Valadares District...sits on a chalcedony chimera set with cabochon emerald eyes. Twocoral frogsobserve from a nephrite base...market i s an attractive flux-grown synthetic emerald of Russian manufacture. This article provides a...the authors a spectacular sample of synthetic emerald that had reportedly been manufactured in the Soviet...bluish green to green emerald color and are only moderately included. The emerald specimen was accompanied |  | | 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) | | 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 |  | | Report (volume) | | ........... .................................. Albite..................................................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...that consisting of white and blue bands. At this locality corundum is associated with prochlorite, black |  | | 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 (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 |  | | Journal (issue) | | pyrope-spessartine • CVD landscape • Unmasking emerald filler • Inclusions in Kenyan rubies from the John...International New emerald locality in Southern California • Update on inclusions in emerald from Davdar, China...in relation to the basaltic volcanism of this locality. As always, our regular columns feature an array...Gem News International section with a new emerald locality in Southern California and the use of rhodium...• • • • • • Diamond Corundum: ruby, sapphire Emerald Peridot Garnet: pyrope-almandine, hessonite Quartz: |  | | 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 | | | 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 |  | | 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 |  | | 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 |  | | 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 |  | | Journal (issue) | | than in that of the dealer who purchased a fine "emerald" crystal on Bogota's famed Avenida Jimenez, only...lazuli deposits, significant a m o u n t s of fine emerald, tourmaline, k u n z i t e , a n d s o m e rubies...deposits of lapis lazuli, significant quantities of emerald, tourmaline, and kunzite, among other gem materials...status report on several Afghan gem materials-emerald, tourmaline, kunzite, and rubyincluding the locations...District borders Roads Trails District names E = Emerald T = Tourmaline K = Spodumene R = Ruby L = Lapis |  | | Book | | 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...Watson, Trimble and Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized...Old labels often give "Arendal, Norway" as the locality for these ilmenite specimens, but the site is |  | | 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 |  | | Report (issue) | | actinolite aegirine aenigmatite aeschynite-(Y) agate* albite allanite-(Ce) almandine alunite amazonite* amblygonite...dravite dumortierite dyscrasite Edenite elbaite emerald* enstatite 52,54,56,58,61,69,72 32 26,28,'3 I...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 |  | | Journal (issue) | | repeatab1e~e.g.~ from one grader or laboratory locality to the next-GIA GTL continually sought ways to...IBrazil." Corundum from placers in the area was first reported...identified in the doinal structures, whereas metamorphic albite-epidote-amphibolite facies roclzs (formed under...Russian). Giibelin E.J. (1982)Gemstones of Pakistan: Emerald, ruby and spinel. Gems a) Gen~ology,Vol. 18, No...value was almost US$153 million, second only to emerald ($213 million) for fine colored stones. These figures |  | | 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 |  | | Journal (issue) | | Karfunkel, L. S. C. Chaves, A. Banko & L. Irran Emerald and associated minerals from A Franqueira, Pontevedra...Moore COVER: SPODUMENE crystal, 11.8 cm, with albite, from Nuristan, Afghanistan. (See the article on...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 |  | | Journal (issue) | | The Barra de Salinas pegmatites, Minas Gerais, Brazil . . . . . . . . . . . . . . . . . . . . . . . ...Andes. 3. Each photo must have a caption with locality, bar scale or description of crystal size, photographer...Localities: The Barra de Salinas Pegmatites inas Gerais, Brazil Francisco Müller Bastos Rua Bernardo Guimaraes...Guimaraes 1645 Belo Horizonte, Minas Gerais 30000 Brazil Brazilian tourmaline has been famous among collectors...producers. HISTORY The discovery of tourmaline in Brazil dates back at least to 1565 (Wilson, 1994); in |
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