 | 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 |
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| 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 |
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| 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 |
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| and gem, from the emerald locality in western North Carolina, under the name of "emerald matrix;" (6) the...discovery of remarkable colored tourma lines at a new locality in San Diego County, California. To these points...snow .and ice of the previous winter. EMERALD. The emerald and hiddenite mine at Stony Point,...twenty years ago when the mine was first opened. Emerald Matrix.-A novel and attractive stone has recently...been brought forward under the name of "emerald matrix." The emerald deposit at Big Crab tree Mountain, |
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| Hiddenite Kunzite Corundum Ruby Sapphire Oriental Emerald Oriental Amethyst Oriental Topaz Pink Sapphire...Serpentine Malachite Titanite Beryl Aquamarine Emerald Emerald Matrix Golden and Yellow Blue Garnet Almandite...itacolumite, the supposed matrix of the diamonds from Brazil, and peridotite, the matrix of the South African...cut a gem 5/16 carat in weight, but its exact locality is unknown. This diamond is now in the State Museum...localities where it is found as gem material. The locality that has furnished the greatest variety of these |
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| EMERALD LOCALITY ON MJOSA LAKE, NORWAY By MAJOR ROLF SELSET Vestengvein 12, Kjeller, Norway Editor's...an emerald occurrence in Southern Norway. Here it is: The information you want about the emerald mine...charge. Only occasionally did they find a good emerald crystal and it was never more than approx. 6 mm...who probably never saw a first class Norwegian emerald crystal cut to show maximum brilliance. I have...during the summer some people take a trip to the emerald mine and hope that a fortune in emeralds is washed |
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| and gem, from the emerald locality in western North Carolina, under the name of "emerald matrix;" (6) the...discovery of remarkable colored tourma lines at a new locality in San Diego County, California. To these points...melted snow .and ice of the previous winter. EMERALD. The emerald and hiddenite mine at Stony Point, Alexander...twenty years ago when the mine was first opened. Emerald Matrix.-A novel and attractive stone has recently...been brought forward under the name of "emerald matrix." The emerald deposit at Big Crab tree Mountain, |
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| 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 |
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| 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 |
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| TRIP TO EMERALD LOCALITY AT HABACH, AUSTRIA By MRS. T. R. HICKERNELL 320 Libbie Ave., Richmond, Va. ...location. Such was my case. One of my friends had an emerald specimen in mica from Habach, Austria. The situation...West. So I inquired at View of terrain in the emerald collecting area, on the way to the mountain top...water dripping from top, we hit upon glimpses of emerald beryls in mica schists here and there. So having...trips in that day, ended up by having about 24 emerald beryls in mica, full vision of the xls. measuring |
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| 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 |
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| Mineralogical and geochemical study of the Regal Ridge emerald showing, southeasterm Yukon. Canadian Mineralogist...skrifter, 68). Nordrum, F.S. og Raade, G (2006) The emerald deposit at Byrud, Eidsvoll, South Norway. I: Kongsberg...Gesellschaft, 40, s. 39 – 66. Selset, R. (1963) Emerald locality on Mjosa lake, Norway. Rocks & Minerals, 38 |
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| ::::::::::::::::::::::::::::::::::::::::~:::::::::::::: 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 |
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| diamond sorter. OBSERVATIONS ON SOME RHODESIAN EMERALD OCCURRENCES By N. A. METSON, B.Sc., and A. M. TAYLOR...authors (A.M.T.) was fortunate to inspect the emerald occurrences near Fort Victoria, Rhodesia. This...guide to the area and for providing additional emerald samples for analysis. J. Gemm., 1977, XV, 8 ...investigation was to try and further our understanding of emerald formation in Nature by studying in particular the...the trace element geochemistry of emerald and associated country-rock. A summary of certain aspects of |
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| Dirlam 150 The Capoeirana Emerald Deposit near Nova Era, Minas Gerais, Brazil David Stanley Epstein NOTES...of Brazil-Twinned Synthetic Quartz and the Potential for Synthetic Amethyst Twinned on the Brazil Law...LCCAdams, Orleans, MA; Luiz Angelo, Rio de Janeiro, Brazil; Trea Arendsen, Lansing, MI; Scott M. Azmus, Corvallis...Newark, CA; Francisco Muller Bastos, Minas Gerais, Brazil; Colleen Witthoeft Nayuki, Montreal, Que., Canada;...white and black cultured pearls (9-13 m m ) with emerald clasp and the accompanying earrings (11 and 16 |
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| i n , Carl & Barbara 488 Austria, Trip to emerald locality (Hickernell) 462 Baker, Victor R 624 Bareiss...R Dyer, John, Jr 147 260 126 438 148 508 Emerald locality, Austria Estes, H e r m a n Everett, I r l...new tool . . 130 Weeping River, Nebr., fossil locality (Everett) 3 8 4 Your fossil collection (Matthews)...Multi-irredescent ( K y t e ) 27 Gallant, Helen 578 Garnet locality, M a r y l a n d ( H a m a s i a n ) . . . . 144...a r t i n , Stuart F M a r y l a n d , Garnet Locality ( H a m a s i a n ) . . . . 144 79 5 t h M i c |
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| 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 |
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| gemstone deposits. From amethyst to zircon, from emerald to sapphire, Canada has it all. Yet, for most of...discovered; occurrences of sapphire in Nunavut, emerald in the Yukon and Ontario, and peridot, topaz, and...new occurrences of sapphire near the original locality, the Beluga occurrence. TNG removed a 4.29-ton...sapphire was recently recognized from an undisclosed locality in B.C. Sapphire crystals are commonly pale to...4-carat lilac step cut. Information about this locality was summarized from Wight (1999b). *69<5+<4 |
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| vanadian-tourmaline. Some of the garnets approach the colour of emerald and this fact appears to be influencing the prices...to red residual colour seen through the Chelsea emerald filter. Although this has * J. Gemm., 1976, XV...been reported as coming from South Africa and from Brazil. No exact locations are given. T h e colour is...strongly transmitted, which accounted for the emerald filter red. T h e over-all spectrum was that of...they are in less tightly packed situations, in emerald or demantoid garnet, the colour is green. Alexandrite |
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| 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 |
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| 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 |
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| 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 |
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| crystal. The Marta Rocha crystal was named after Miss Brazil of 1954. It was discovered in July of that year...north-east of Topazio in the State of Minas Gérais, Brazil, and its weight was 34.7 kg and it yielded 57,200...of the pieces. The 'Pool emerald' A hydrothermally grown synthetic emerald manufactured in Australia...indices of some of the Biron fell into the natural emerald range at 1.571-1.576. The early production of this...inclusions and indeed some could not be termed 'emerald' because they lacked a chromium content sufficient |
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| 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 |
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| 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 |
