 | | Journal (issue) | | County, Virginia, Virginia, Minas Minas Gerais, Gerais, Brazil, Brazil, Madagascar, Madagascar, Sri...1.802(3) Taita Hills, Kenya 2 1.795-1.809 Minas Gerais, Brazil3 1.803-1.805 4 Composition Garnets...Brazil:chemical chemicalcharacter characterand and Brazil: thermal behaviour behaviour thermal 1 1 2 2 3...Ouro Preto, MG, Brazil Universidade Federal dede Ouro Preto, 35400, Ouro Preto, MG, Brazil ABSTRACT: Imperial...town Ouro Preto, Minas Gerais, Brazil. town of of Ouro Preto, Minas Gerais, Brazil. Thetwo twomost mostimportant |  | | Journal (issue) | | Alexandrite from the Pegmatite Districts of Minas Gerais, Brazil Keith Proctor 33 Faceting Large Gemstones...alexandrites near the town of Hematita in Minas Gerais, Brazil; in less than three months in 1987, more...of lVCT is darlzer blue aquamarine, like the material from Coronel Murta (Brazil) and Tongafeno (Malagasy...For example, the Fe2++Fe3 IVCT coloration in aquamarine is best seen down the optic axis because of the...is why, to get the deepest possible color in aquamarine, the cutter often facets the table perpendicular |  | | Journal (issue) | | Colourless cat’s-eye apatite | Prismatic Ethiopian aquamarine | Blue chrysocolla chalcedony | Painite specimen... 32 Purple to Reddish Purple Chrysoberyl from Brazil 42 Identification Characteristics of Natural...bicoloured purple and blue ‘Maxixe’ beryl, an aquamarine that was fracture-filled with epoxy resin and...Cat’s-eye Apatite from Brazil Intense blue apatite is known from Minas Gerais, Brazil, and cat’s-eye stones...Epstein (Precious Resources Ltda., Teófilo Otoni, Brazil). He reported that the material was found in January |  | | Journal (issue) | | epidote deposits of the Capelinha Region, Minas Gerais, Brazil ......................................315...epidote on matrix, 4.4 cm, from Capelinha, Minas Gerais, Brazil. Gail and Jim Spann collection; Tom Spann...w. FineMineral.com Tourmaline Cruzeiro Mine, Brazil. 19.5 cm Fine Minerals International proudly invites...EPIDOTE DEPOSITS OF THE CAPELINHA REGION, MINAS GERAIS, BRAZIL Andrea Bartorelli1 Carlos Cornejo2 Mario...mid-1960s, the Capelinha region in the State of Minas Gerais, Brazil, has become world-famous for producing beautiful |  | | Book | | 1982 Jules Roger Sauer ” Foreword For years Brazil has been the major producer of colored stones in...metamorphic rocks, the variety of gem deposits in Brazil is almost infinite. In addition to the mineral...assemblage one might expect from pegmatite dikes, Brazil also produces a very significant output of diamonds...written in English, and beautifully illustrated. “Brazil, Paradise of Gemstones’, by Jules Roger Sauer,...Century. The book is a showcase ofthe best from Brazil and it makes a handsome evocation of what is beautiful |  | | Journal (issue) | | Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By Aurélien...Collection V. L. Villani photo p. 758 Cover Photo: Brazil is the source of a variety of coloured stones,...7.99 ct amethyst, 3.29 ct tourmaline, 2.40 ct aquamarine, 1.12 ct Imperial topaz and 4.84 ct golden beryl...Mong Long, gems such as tourmaline (Figure 4d), aquamarine, spessartine, quartz, topaz, zircon and phenakite...pegmatites are a source of beautiful ‘sky’ blue aquamarine crystals. Six tourmaline samples from Mong Pai |  | | Journal (issue) | | Gem Pegmatites of Minas Gerais, Brazil: Exploration, Occurrence, and Aquamarine Deposits Keith Proctor...News Book Reviews ABOUT THE COVER: Most of the aquamarine on the world gem market has come from the rich...the northeastern section of the state of Minas Gemis, Brazil. The history of gem exploration and m i n...and the geology and occurrence of the famous aquamarine deposits in particular, are discussedin the article...by Keith Proctor in this issue. The 898-grain aquamarine crystal on the cover, which is 13.8 cm high x |  | | Journal (article/letter/editorial) | | 183-187, 1980 Euclasefrom Santa do Encoberto,Minas Gerais,Brazil GroRGro GnazreNr AND GroLJ Gurol Istituto...Transparenteuclasefrom Santado Encoberto,Minas Gerais, Brazil, was studiedwith regard to optical properties...mineralogical area of Ouro Preto, State of Minas Gerais, Brazil was once thought to be limited to a few...23005/9)were creditedto Ouro Preto, state of Minas Gerais,Brazll. The shapeand orientation of the cavities...in a ghost qtartz, embedded in rock-crystal from Brazil, is describedby Eppler (1963).The inclusionsconsistof |  | | Journal (issue) | | APRIL 1993 Cover Picture The Hematita mine in Minas Gérais in 1987 - probably the richest alexandrite...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil' pp. 333-54) ISSN: 0022-1252 F.G.A. your key...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil JacquesCassedanne, Cassedanne, D.Sc.,* Maurice...Fundiio, Fundão, 21,910, Rio de Janeiro, Janeiro, Brazil *Institute of Geosciences UFRJ-CNPq, Cidade Universitaria...Ipanema, 22,410, 22,410, Rio de Janeiro, Janeiro, Brazil **Maurice Roditi Jewellers, distinguished: Abstract |  | | Journal (issue) | | January-February, 2011 MARCO AMAB I LI BERYL (variety aquamarine) with muscovite, 14.5 cm, from Dassu, Shigar...cm, from near Galileia, Rio Doce Valley, Minas Gerais, Brazil. Roberto Appiani photo. IIEMATITE with... from the Santa Rosa mine, Doce Valley, Minas Gerais, Brazil. Jeff Scovil photo. Supplement to The Mineralogical... 2011 31 TIZIANO BONISOLI BERYL (variety aquamarine), 9.5-cm doubly terminated crystals from the...(variety aquamarine) 13.3-cm doubly terminated scepter from the Medina mine, Minas Gerais, Brazil. Jeff |  | | Journal (issue) | | mine, Minas Gérais, Brazil. See 'The location, geology and mineralogy of gem tourmalines in Brazil' on...location, geology and mineralogy of gem tourmalines in Brazil Jacques P. Cassedanne, Dr. Sc. *, and Maurice Roditi...tourmaline is the 'Eastern pegmatitic province' of Minas Gerais. One general and three detailed maps of specific...Tourmaline, pegmatite, eluvial deposits, gem mining, Brazil © Gemmological Association and Gem Testing Laboratory...the most remarkable coloured gemstones mined in Brazil where, erroneously, for a long time it was marketed |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais. Collection of Alvaro Lucio. Photograph taken...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite |  | | Journal (article/letter/editorial) | | characteristic of gem tourmaline found in Pederneira, Minas Gerais, Brazil. SPECIMEN FROM DANIEL TRINCHILLO ; PHOTO...TOBER 2011 Faceted elbaite stones from Paraíba, Brazil (2.59– 3.68 ct; the stone on the left is about...discovery in the late 1980s in the Paraíba State of Brazil (e.g. Fritsch et al. 1990; Beurlen et al. 2011...(corundum), ruby (corundum), emerald (beryl), aquamarine (beryl), and diamond] have been successfully...Lake (1) Minas Gerais, Brazil Araçuaí district Conselheiro Pena district ♦ ♦ Malacacheta district |  | | Journal (issue) | | from Brazil shows chatoyancy caused by flat hollow channels. Four-rayed star aquamarine from Brazil has...the c-axis. A tourmaline-quartz combination from Brazil has an iridescent chatoyancy Grey orthoclase moonstone...directions of a perfect cleavage. 451 Keywords: aquamarine, chatoyancy, moonstone, rhodochrosite, stars...cat's-eye from Brazil A very unusual example of a cat's-eye was purchased in Brazil by the author in...measuring Figure 1: Chatoyant pale blue topaz from Brazil weighing 152.15 ct. Photo by J. Hyrsl. 32.94 x |  | | Book | | until he managed to reach the land of his dreams, Brazil. A specialist in the field of geology and mineralogy...crystals and the remarkable mineral treasures of Brazil, as well as the incredible adventures and difficulties...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL Cyan Magenta Yellow Black 1 Delev Ilia Deleff...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL SOFIA–MOSCOW 2004 3 Cyan Magenta Yellow Black...MINERAL TREASURES OF BRAZIL 76 85 AN OUTLINE OF THE MINERAL RESOURCES OF BRAZIL ORIGIN OF GIANT CRYSTALS |  | | Journal (issue) | | page 258. Inside back cover: (left colurnn) Aquamarine-Glenn & Janis Rising collection, page 218; Ruby-Michael...gwindel-Brent Lockhart collection, page 175; Aquamarine-Wally Mann collection, page 193. (rniddle colurnn)...later shifted his focus to Mexico, and traveled to Brazil, irnporting !arge Supplement to The Mineralogical...Brumado mine, Brumado, Serra das Eguas, Bahia, Brazil. Don and Laura Aaron photo. 12 Supplement to...Spodumene, 9.5 cm, from Resplendor, Doce Valley, Minas Gerais, Brazil. Don and Laura Aaron photo. Malachite with |  | | Journal (issue) | | the certificate, b u t we decided it was not an aquamarine colour. T h e colour o f t h a t first stone...were trade people none put down their results as aquamarine—all p u t blue beryl. T h e trade knows a n d...d understands w h a t is meant by aquamarine a n d the colour thereof. From information given by members...M a x i x e Beryl" from the Maxixe Mine (Minas Gérais, Brazil). This particular specimen was donated to...Beryl mine also told me that no one (presumably in Brazil) knew the whereabouts of the Maxixe Mine. Following |  | | Journal (issue) | | Santa Maria mine, Brazil; (2) 20.10-ct peridot, Burma; (3) 21.09-ct kunzite, Brazil; (4) 8.14-ct grossular... California; (6) 15.18-ct tourmaline, Paraiba, Brazil; (7) 10.42-ct tanzanite, Tanzania; (8) 6.09-ct...38-ct ruby, Burma; (17) 3.08ct tourmaline, Paraiba, Brazil; (18) 1.85-ct fancy purple-pink diamond, Argyle...number of new localities. Fine alexandrites from Brazil, sapphires from Southeast Asia and Australia, emeralds...and pegmatite gemstones (tourmaline, aquamarine, etc.) from Brazil, Pakistan, Afghanistan, and several |  | | Journal (issue) | | jadeite, (3) 7.81 ct violet jadeite, (4) 27.23 ct aquamarine, (5) 1.28 ct blue spinel, (6) 1.17 ct benitoite...Namibia, as well as Madagascar), South America (Brazil and Colombia), central and southern Asia (Sri Lanka...Pakistan; and pink to red tourmalines from Nigeria and Brazil. Diamond was mined in northern Canada for the first...typically report gem- Figure 3. Saturated-color aquamarine comes from relatively few deposits, and Africa...mining also continued at traditional sources in Brazil and Africa. Large quantities of Brazilian emeralds |  | | Book | | crandallite from the Alto Benedeto pegmatite, Parai'ba, Brazil (by J.P. Cassedanne & L. Barreto) 22: 183-185 ALTO...Burian goyazite from [Alto Bernardino, Paraiba,] Brazil (by J. S. White, Jr.) 12:379 ALUMOHYDROCALCITE...and muscovite from the Ze Pinto prospect, Minas Gerais, Brazil 21:405-408 --with J.P. Cassedanne: Crystallized...Pitora, Minas Gerais, Brazil 21:409-412 --with J. P. Cassedanne: The Jaguara~u pegmatite, Minas Gerais, Brazil...and platinum from C6rrego Born Sucesso, Minas Gerais, Brazil 23:471-474 AMARGOSA DESERT Hydroboracite |  | | Journal (issue) | | SEPTEMBER–OCTOBER 2019 Articles The Golconda District, Minas Gerais, Brazil ..........................................TOURMALINE, 11.9 cm, from the Golconda I mine, Minas Gerais, Brazil Brice Gobin (Mineral Art) and Emanuele Marini...China, South Africa, Namibia, Chile, Peru, Bolivia, Brazil and Mexico. His first exchange of specimens with...September–October, 2019 The Golconda District Minas Gerais, Brazil Carlos Cornejo1 Andrea Bartorelli2 Wendell...important specimen-producing districts in all of Brazil. INTRODUCTION The Golconda Pegmatite Field is a |  | | Catalog/List | | x 24mm on Quartz Orthoclase interphase. 9. AQUAMARINE. Centreville,Boise County,Idaho,U.S.A. A fine... QUARTZ (with Sand inclusions). Ibitiara,Bahia,Brazil. An extremely unusual pair of fat gemmy terminated...£34.00. 152. RUTILE in Quartz. Ibitiara,Bahia,Brazil. Aesthetically displaying reclining,lightly smoky-colour...9mm x 8.5mm x 3mm, £69-00. 180. TARAMITE. Malacacheta,Brazil. This example of rare amphibol forms a tall...45mm x 30mm x 30mm. £38.00. 185. TOPAZ. Minas Gerais,Brazil. Terminated 1 ,gemmy sherry-coloured "Imperial" |  | | Journal (issue) | | yellow component is merely bleached and the blue aquamarine remains (K. Nassau, Gems & Gemology, Vol. 16...heating of sapphires with the heat treatment of aquamarine, for which no tests exist. Geuda stones have...the comparison with heating beryl to produce aquamarine is indeed inappropriate. Only by becoming aware...to be alert. Unlike the heat-treatment used on aquamarine, it is often possible to detect the heat or diffusion...mention a few: the growth tubes running through an aquamarine parallel to the c-axis (the so-called 'rain') |  | | Catalog/List | | listing a specimen as being from “Nevada” or “Minas Gerais.” The situation has not markedly improved with...MAGNESITE Brumado (Bom Jesus dos Meiras), Bahia, Brazil As prevalent as Magnesium Carbonate is in the rocks...five or less localities is the deposit at Brumado, Brazil, where well-formed and transparent crystals are...Estimate: $8,500-$9,500 52054 MANGANOTANTALITE Minas Gerais, Brazil Everybody has become acquainted with the...Manganotantalite) is from the conflict-free country of Brazil. Bidders can rest easy now. This luscious little |  | | Book | | 67 60 Danburite Andradite 70 Apatite 70 Aquamarine val Aventurine 73 131 131 131 132 133 ...of the famous intaglio engraved by Evodos in aquamarine. Supposed to represent the Virgin Mary, the original...materials Quartz crystals from Corinto, Minas Gerais, Brazil. Height: 15 cm. Sorbonne collection using...crys- Washing diamond-bearing gravel in Minas Gerais, Brazil. Photo: tals of such minerals as quartz...phrase ‘‘gem quality’ to de- from Salinas, Minas Gerais, well as an ‘‘ornamental stone.’ Amethyst |
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Malacacheta, Minas Gerais, Brazil