 | | Journal (article/letter/editorial) | | amethyst: In this connection it may be of interest Bahia, Uruguay, Siberian, and Auvergne to many readers...put out under the title "Gewerbliche example, a Bahia amethyst should possess Materialkunde." This book...AMETHYST trade secrets, processes, etc., which are Bahia $ .20-$ 1.50 generally conspicuous by their absence...72.00 sold on its own merits, which are not a CHRYSOPRASE $ . 4 0 - $ 3.00 ROCKS AND MINERALS CITRINE...FIRE OPAL $ .25 - $ 3.50 HEAT-TREATED CITRINES Brazil $ .10-$ 1.00 Spanish 102.00 Madeira 15 2.00 JADEITE |  | | Book | | Occurrence: The Americas 63 USA 64 Mexico 72 Panama 75 Brazil 75 Canada 80 7 Occurrence: Rest of the world 81...mtorolite shows a chromium absorption spectrum), chrysoprase (apple green, translucent), cornelian (orange-red...quartz crystals come from the State of Minas Gerais, Brazil, and occur in vugs or pockets which are found in...impossible and unnecessary. Nomenclature 7 Chrysoprase is an apple-green translucent variety of chalcedony...growth condition but it has been observed that Brazil twinning (see below) is very frequent in amethyst |  | | Journal (issue) | | Angled growth structure in natural amethyst from Brazil; planes parallel to the positive rhombohedra r...in natural citrine (heattreated amethyst) from Brazil; adjacent planes parallel to the positive rhombohedron...the c-axis. 40x. Polysynthetic twinning of the Brazil law, which is also a characteristic feature of...in natural citrine (heattreated amethyst) from Brazil; opposite planes parallel to the positive rhombohedron...Norway), Emmaville (New South Wales), Salininha (Bahia) or Gandao (Mohmand Agency, Pakistan), must be allocated |  | | Book | | the eighteenth century sources were discovered in Brazil which soon superseded those in India. The Brazilian...also the hardness at 8.5. Chrysoberyl is found in Brazil, Ceylon, Burma and Rhodesia. 13 Some chrysoberyls...cat’s-eyes (lower right) are found in Ceylon and in Brazil. - A variety of chrysoberyl highly in demand is...also found in Ceylon, in Rhodesia, and recently in Brazil. Hardness 8.5; Specific gravity 3.70-3.73; Mean...also from Elba (Italy), is actually worth cutting. Brazil, the East Indies, New Zealand and Rhodesia should |  | | Book (edition) | | Carbuncle, Garnet, 188—191 ... Lapidaries Chrysoprase Cinnamon Chal- ... (Chrysoberyl) and ....from beauty in of the Palatinate which or Brazil. determines that Precious lands. as equal...found Indian, Brazilian, Peru is Siberia and in Brazil; fairly been India, Brazilian, South-African...PRECIOUS habitat, THE II. India, Stones, It the Brazil and The Ancients in were Where Precious Stones... ; it were of way in and it is Precious Brazil, they noble are to found in society their |  | | Catalog/List | | shape & transparency.Attractive RF MI.£6 15) CHRYSOPRASE,Queensland,Australia. Attractive deep apple green...29) UVITE TOURMALINE with MAGNESITE, Brumado, Bahia, Brazil. Very large rich moss green gemmy crystals to...tourmaline), Brazil, 6mm Square. l.2lct. Mysterious deep blue stone, £68 55) TOURMALINE, Brazil. 6.5mm Round...73ct. Gorgious deeprose red. £ 153 56) FIRE OPAL, Brazil. 8mm Round. l.47ct. Bright orange slight haze....colour, interesting veils. £75 58) ROSE QUARTZ, Brazil. Antique 8. 7x7.2mm. 1.57ct. A pretty pale rose |  | | Book (edition) | | Benitoite Blue quartz Calcite Chalcedony Chalybite Chrysoprase Citrine Carnelian Corundum Dioptase Dolomite...6½-7 Chalcedony 6-}-7 Chloromelanite 6½-7 1 Chrysoprase 62 7 Demantoid 6-}-7 Fossilized wood 6½-7 Heliotrope...65 2.55- 2.65 Elaeolite Chalcedony 2.58- 2.64 Chrysoprase 2.58-2.64 Peristerite 2.61 - 2.63 Moss agate...Pearl Chrysoberyl Petalite Chrysocolla Phenacite Chrysoprase Phosgenite Citrine Prasiolite Celestine Prehnite...Chalcedony 1 .530-1 .539 + + 0.028 Up to + 0 .006 Chrysoprase 1 .530-1 .539 Apophyllite Peristerite Meerschaum |  | | Catalog/List | | dark Shale. 70mm x 55®® x 45mm. £3.00. 48. CHRYSOPRASE. Szklary.Poland. 1 Two fine large pieces of hackly...attractive emerald — ■*Jand ---- 1 apple green Chrysoprase with one polished surface. Specimen ’A'. 80mm...146. QUARTZ (with Sand inclusions). Ibitiara,Bahia,Brazil. An extremely unusual pair of fat gemmy terminated...30mm. £34.00. 152. RUTILE in Quartz. Ibitiara,Bahia,Brazil. Aesthetically displaying reclining,lightly...5mm x 3mm, £69-00. 180. TARAMITE. Malacacheta,Brazil. This example of rare amphibol forms a tall,narrow |  | | Journal (issue) | | x e Beryl" from the Maxixe Mine (Minas Gérais, Brazil). This particular specimen was donated to B. W...Beryl mine also told me that no one (presumably in Brazil) knew the whereabouts of the Maxixe Mine. Following...beryl was found in the Maxixe mine in Minas Gerais, Brazil, which h a d the following unusual properties:...rough, from an unspecified locality said to be in Brazil ; a n d three dark green stones a n d some dark...inclusions of a lead-antimony mineral in quartz from Brazil.) Z. Dt. Gemmol. Ges., 1973, 22, 2, 62-64. This |  | | Journal (issue) | | ........................................... 13 Brazil .................................................Lapidary, Hong Kong; CMP Asia, Hong Kong; GEA, Brazil; Emmanuel Piat, France; Israel Emerald Cutters...DIRECTORS Andrew Cody, Australia Sergio Martins, Brazil Emmanuel Piat, France Constantin Wild, Germany...to improve the color. Some kunzite buyers from Brazil also discovered that rough crystals they purchased...of the fields. Since March, both Australian Chrysoprase from the and international buyers have Marlborough |  | | Journal (issue) | | Brazilian emeralds and their occurrences: Carnaiba, Bahia Dr Dietmar Schwarz* and Thomas Eidt, Dipl.Geol...Federal University of Ouro Preto, Minas Gerais, Brazil **University of Mainz, FRG 1. Introduction The...occurrences of Carnaiba and Socoto in the state of Bahia are located at a distance of about 40 kilometres...centre for the gemstones mined in the state of Bahia (besides emerald, others include amethyst, citrine...been the most important emerald mining region in Brazil until the discovery of the Santa Terezinha occurrence |  | | Book | | Probably Diamonds have been imitated by many Brazil and most gems, although small, the most famous...ability of diamond to found in river gravels in Bahia, Brazil. of South Africa was found weighing 83.5 conduct...meter. Diamonds of industrial diamond found in Brazil and brilliant weighing 47.74 carats. Other suitable...Africa Unnamed Brown 7 726.60 VARGAS 1938 Brazil Vargas (48.26); 22 others 8 726.00 JONKER ...chemical impurities. in Afghanistan, Australia, Brazil, towards the end of the 19th century Small traces |  | | Journal (article/letter/editorial) | | 58o-•,35o B.c. TOPAZ. Egyptian. x,58o-•,35o B.c. CHRYSOPRASE. Egyptian. x,58o-•,35o B.c. PERIDOT. Egyptian:...Cornellius). x573. TOURMALINE. I573, found in Brazil: identifiedby Dutch in preciousstones brought from...Africa. •785. EUCLASE. Introduced into Europe from Brazil by Dombey. x785. DIOPTASE. ' Found in Altyn Tube...SPODUMENE. (Clear yellow)--First reported from Brazil. About I87O. THOMSONITE. Found in U.S. A. x876...John Nieuhoff reports rock crystal produced in Brazil. Beryl-Topaz deposits of Mursinka district, Urals |  | | Book (edition) | | 106 Sard 126 Moonstone 164 Andradite 106 Chrysoprase 128 Heliotrope 128 Dendritic Agate 130 Moss Agate...Fossilized wood Jasper Cordierite Chalcedony Chrysoprase Moss agate Tiger's eye Skalpolite Moonstone...Obsisian Charoite Chrysoberyl Opal Orthoclase Chrysoprase Parisite Citrine Peridot Celestine Periclase...Tiger's Eye Pearls Aragonite Agate Chalcedony Chrysoprase Moss Agate Meerschaum Withente Milarite Nepheline...504, (495), 485, 445 Chrysoprase, artificially dyed with nickel: 632, 444 Chrysoprase, natural: 444 Cordierite: |  | | Catalog/List | | on Sm ma rix. (GovernadorVdladares,MinasGerias Brazil) E4.50 298 BISMUTITEBi C0/3 0 Quite rich yellow...masses in matrix (Alto DoGiz, Rio Grandedel !lorte Brazil) 5mm n * E4.00 407 TADZHIKITZ Ce (Ce Hd La)...crystal. aatrix (Iviqtut Greenland) About ~ins high (Brazil) El lxl f2 lx2 E4 329 PIEHOIITITE Ca(Al Kn Fe)...cleavage. (Afghanislan) 1 Ins pieces ES lem pieces fro Brazil El 173 UVAROVITE gree1 coat·ng on Chro ite. Possible...terminated erystal. (Serra des Aguas, Brumaåo,Bahia Brazil) F.6 510 OR'ilIOCl,ASE lem pinkish double terminated |  | | Book (edition) | | Carnelian Cat’s-Eye Quartz Chalcedony Chromdravite Chrysoprase Citrine Cinnabar Corundum Davidite Dendritic...Jeremejevite Sillimanite Zircon Axinite Chalcedony 2D Chrysoprase 6%-7 Diaspore 64-7 Ferro-Axinite 6%-7 Gadolinite...Petrified wood Jasper Cordierite Chalcedony Chrysoprase Moss agate Tigers eye Scapolite Anorthoclase...Childrenite Chiolite Chlorapatite Chrysobery| Chrysoprase Citrine Cryolite Danburite Datolite Demantoid...Apophyllite Tiger’s-eye Aragonite Agate Chalcedony Chrysoprase Moss agate Sepiolite Witherite Milarite Nepheline |  | | Journal (issue) | | on this occasion from the Salininha locality in Bahia. These have been promoted as "emeralds", and even...emerald obtained from the Salininha deposits in Brazil. Chromium is reported to be present in specimens...R.K.M. BROOKS (J. H . ) . Marlborough Creek Chrysoprase deposits. Gems and Gemology, 1965, 11, X I ,...An important article on the occurrence of the Chrysoprase found in Queensland, Australia. T h e geology...associated minerals are fully discussed. T h e Chrysoprase is found in vein form, and the veins have an |  | | Book (edition) | | this innovation should increase, and to of the Brazil diamonds in the “brilliant” form, noble be .... . . . . . . and . . Cinnamon . Chrysoprase 115 115 .118 123 . .129 . . . 139 ...the the sleep, procures and wisdom. Beryl. Chrysoprase. Topaz. Jacinth. Amethyst. the Respecting... derived from “barak,” Ark of Noah to a chrysoprase, called Bareketh, literally “flashing stone;”...valueless. The diamond is found in Hindostan, Brazil, Sumatra, Borneo, the Ural Mountains, North America |  | | Journal (issue) | | Ruby-Sapphire Review Nanocut Plasma-Etched Diamonds Chrysoprase from Tanzania Demantoid from Italy THE QUARTERLY...& NEW TECHNIQUES ___________ pg. 267 271 Chrysoprase and Prase Opal from Haneti, Central Tanzania...and gemological characteristics of Tanzanian chrysoprase and green prase opal are revealed. 280 Demantoid...GEMOLOGY WINTER 2009 NOTES & NEW TECHNIQUES CHRYSOPRASE AND PRASE OPAL FROM HANETI, CENTRAL TANZANIA...Renfro Commercial quantities of gem-quality chrysoprase and green prase opal (nickel-bearing chalcedony |  | | Book (edition) | | Malachite Agate 148 Ti 176 180 Feldspar Group Chrysoprase Precious Beryl 112 Anyolite 178 Hematite ...Carnelian Cat’s-Eye Quartz Chalcedony Chromdravite Chrysoprase Citrine Cinnabar Corundum Davidite Dendritic...Galaxite Painite 74-8 7%4-8 74-8 74-8 74-8 Chrysoprase 6%-7 Diaspore 64-7 Ferro-Axinite 6%-7 Gadolinite...Petrified wood Jasper Cordierite Chalcedony Chrysoprase Moss agate Tigers eye Scapolite 2.86-3.09 Anorthoclase...Childrenite Chiolite Chlorapatite Chrysobery| Chrysoprase Citrine Clinochrysotile 34 Diopside Dolomite |  | | Journal (issue) | | an area north of Teofilo Otoni in Minas Gerais, Brazil. The inclusions were studied using a combination...near the town of Padre Paraiso in Minas Gerais, Brazil, approxiof Te6filo Otoni on mately 100 kilometres...imitations precious opals from the State of Piaui, NE Brazil, for emeralds, rubies and sapphires.) Zeitschrift...Pedro II district in the state of Piaui, northeast Brazil.) Revue de Gemmologie, 104, 3-7, 14 figs (3 in...the Pedro II district of Piaui state, north-east Brazil. The opals have a comparatively low water content |  | | Book | | diamonds. in charity; was em- sardonyx chrysoprase. these the real fortitude; the the place...by power been contributed have beds the Brazil stones. Ceylon the their India of of where...unlovely great value value. in ap- which 10 BRAZIL DIAMONDS. Previous had In been 1727, struck...struck the an by these to merchants, Brazil might circulated the the of mines But, ity as...as of there the Brazilian sold as their Bahia tity time, afraid the Goa, markets dealers |  | | Book (edition) | | brought to light from the mines of India or of Brazil. IV . In the fourth class comes first the Emerald...from those found in the Ural mountains, or in Brazil, or at the Jagersfontein Mine in South Africa....unequal rival The Beryl of Siberia to that of Brazil, and the Amethysts of the Bavarian Palatinate...acknowledged fact that in India, Burma, Ceylon, and Brazil, andof late years in South Africa, in Siam, and...crystalline form. In Ceylon, India, Burma, Siam, Brazil, Australia, Montana, Siberia, and South Africa— |  | | Catalog/List | | tabular BRAZILL\.NITE pale green Minas Gerias, Brazil) 1 masses. Granite. (Han Bogdo, (Fountain ...Pimental, Ria Doce. J. ·2JC2 C 3. 60 CHRYSOPRASE, attracti Brazil) 1x1 c3 1x2 i4.50 c:77 CORNUBITE about...bright green rrasses. (Vitoria da Conquista, .Bahia, Brazil) 2x4ins 1:6.00 GLAUCONITE rich dark green masses...37 L!!:ITDOLITE~ g0od, li 12.c colour€d thick. (Brazil) ~10 38 TEKTITE variety B) 1 cm .C5. 00 39 SILLIJ\'iAIHTE |  | | Catalog/List | | $5.00, $7. 50. EMERALD CRYSTALS Vittorio, Bahia, Brazil. Beryllium silicate. Sharp single transparent...page 7. I FUCHSITE Ouro Preto, Minas Gerais, Brazil. Basic potassium aluminum chromium silicate. Contains...Zirconium silicate. Serra de Caldas, Minas Gerais, Brazil. NEW FIND. Very large brown tetragonal single crystals...Aggregates in 11'lastuc box, $1. SCHUCHARDTITE (Chrysoprase Earth) Hohenstein Ernsthal, Saxony, Germany....SPHENE Calcium titanium silicate. Minas Gerais, Brazil. NEW FIND. Very sharp single twinned xls of the |
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Bahia, Brazil