 | | Book | | New Fetter Lane, London EC4P 4EE Published in the USA by Chapman and Hall 29 West 35th Street, New York...and isomorphism The classification of minerals Crystal structure Properties of crystals Gem crystals ...imitation stones Crystal growth from solution Growth by flame-fusion Hydrothermal growth Crystal pulling Flux-melt...corundum precipitates out in star-like rays when the crystal is heated to approximately 1500°C (the melting...arbitrarily assigned as 12. birefringence a crystal with more than one refractive index is said to |  | | Book (edition) | | MONROE COUNTY COMMUNITY COLLEGI 549 K91g Kraus, Edward Henry, 1875- Wii a Monroe County Community...LONDON 1947 Inc. BRARY MMUNITY COLLEGE LI MONROE COUNTY CO Michigan GEMS Monroe, AND GEM MATERIALS Copryricut... synthetic rubies and sapphires, and the rock crystal variety of quartz. Although dealers in gems and...been entirely reset. In Part I, the chapters on crystal forms, physical properties, optical properties...new, concise, and fully illustrated chapter on crystal structure and X-ray methods. In Part II, all of |  | | Journal (issue) | | FEATURE ARTICLES 81 Flux-Grown Synthetic Red and Blue Spinels from Russia Sam Mnhlmeister, John 1. Koivulci...have developed new flux-grown synthetic red and blue spinels, some of which can be identified only by...political issue. W. WM. HANNEMAN, Ph.D. Castro Valley, California GEMS & GEMOLOGY Summer 1993 By...Fritsch, and James E. Shigley Examination of red and blue samples of relatively new flux synthetic spinel...from their natural counterparts. The flux synthetic blue spinels can be recognized on the basis of their |  | | Journal (issue) | | BOULANGEBITE AND ASSOCIATED MINERALS OJ' THE CLEVELAND MINE, STEVENS Co., WASH. By Charles 0. Fernquist. A...and Associated Minerals of the Clevelan d Mine, Ste'"ens County, Washington. By Charles O. F ernquist ....Specimens of M..uNE Mt 1'""ERAL&-$1.00 Pink. Green, Blue and Black Tou_rmnline, Amblygonite, Pur-purite,...Rhodochrosite, Rhodonite. Chalcanthite, Wernerite, Blue Calcite, Chalcedony, Silver Ore, Petri fled Wood...MINERALS ANO GEM S A SPECIALTY V I SIT OXFORD COUNTY MINERAL L OC ALITIES IN 1930. I CORDIALLY W E L |  | | Book (edition) | | Physical Properties and Char acteristics ° culing Mining, and Cutting . i Fy 3 Ve, < $24.95 Can. $32...Light 36 _ 64 Mining Methods Cutting and Polishing of Gems 69 Engraving on Stones 17 Crystal Systems _...Jade (Jadeite and Nephrite) bees Species Rock Crystal 132 Ni ee Smoky Quartz 132 ype haha eens 90...176 Prasiolite 136 Rose © 138 ides 138 oo rase Blue Quartz 138 Quartz Cat’s-Eye Carnelian 172 _ 174...Coral 250 Jet 252 — Cannel Coal 252 Ivory 252 Odontolite 252 Amber 254 Pearl 256 Operculum 265 Mother |  | | Book (edition) | | nomenclature standards. Diagrams of the important crystal growth methods and descriptions of how they work...GEMSTONES FROM THE LABORATORY 3 4 / History Crystal Structures and Properties Origin of Gemstones...Rock Classification Gem Scarcity Intrusive Crystal 6 Growth Synthetic Gem 9 / Gemstones SOURCES...a fraction of their cost. Unfortunately, the crystal growers are enticed by a far greater monetary...is a gem? INTRODUCTION WHAT A IS GEM? cut blue zoisite resembles fine sapphire, dubbed the new |  | | Book (edition) | | Education HALL, Ld. GEMS F. M. EVANS AND CO., CRYSTAL LIMITED, PRINTERS, PALACE, S.E. PREFACE. ...• . Beryl i'95 Flint glass ■1779 Rock crystal r668 Plate glass medium to another is bent of...marked characteristic of . . . dispersed. . Blue sapphire vii. ; from this from separated are...AND Red garnet perhaps . . . glass. Rock crystal. . following suffice : . ’027 . *019 ....should properties at a certain the on nor crystal precious in some different sides is stones |  | | Book (edition) | | Archbishop Mttty High School Library 5000 Mitty Way San Jose, CA 95129 5 1998 rHE — ——— ——————— ——...Edition gh School Archbishc 5000 Mttty Way San Jose, Ck 95129 % $J Sponsored by the National Audubon...recognition as objects of beauty and merit, and colorful crystal In the this Field clusters are now regarded as...a vein, although it gives a company the right to mine, should not be taken as justification for barbaric...conscience and good will, or as stockholders to encourage mine operators to arrange for specimen preservation in |  | | Journal (issue) | | Gemstone formation The formation of a gemstone crystal requires a number of more or less important conditions...following: Basic conditions pertaining to gemstone crystal formation • availability of main constituent chemical...formation • deformation history of parent rock and crystal during its period of growth All these factors affect...affect the individual characteristics of a gemstone crystal, and result in differences regarding the following:...degree of restoring nature of fillings in negative crystal voids Cut Gemstones What sort of definitive information |  | | Book (volume) | | VOL.2 Bauer, Max Precious stones J FOX LAKE DISTRICT LIBRARY 2§| £ J3RAND AVENUE 60020 - PRECIOUS...(Chloromelanite) Quartz . A. Crystallised Quartz . Rock-crystal .... Smoky-quartz .... Amethyst ..... Citrine ...Colourless stones ..... 566 Greenish-blue stones .... 567 Pale blue stones.568 Blue stones ...... 568 Violet stones...576 White, faintly-coloured, and grey stones.577 Blue stones.577 Green stones.578 Black stones.579 Yellow...Diamond, crystal in matrix : Brazil. 2. „ 190 S. Africa 125 125, 173 ..... 265 Ruby, crystal ,, |  | | Journal (issue) | | or with photographs. Such books are a veritable mine of information. In the case of unset gemstones the...that in this country it is unusual to see really blue-white diamonds for sale because we cannot usually...with. W h a t has never yet been discovered is a blue variety of garnet, which seems rather strange, and...the attractive title of a mystery story " T h e Blue Carbuncle " written some years ago. Amphigene, a...to its existence. Text books do not suggest that blue topaz is a rare stone, yet the fact is that it is |  | | Journal (issue) | | Australia Maxwell J Faulkner and lames E. Shigley Blue Pectolite from the Dominican Republic Robert E....reaction to short-wave U.V The exception, the largest crystal (64.46 ct), fluoresced an extremely wealz, patchy...fracture surface of this 15.12-ct Atocha emerald crystal. Photomicrograph by Robert E. IZane; oblique illumination...exposed on a fracture surface of the 15.12-ct crystal (figure 9). These were first tested with a minute...Colorless, brown, green, yellow, redbrown, orange, blue (heat treatment) Brownish green, brownish red |  | | Book (volume) | | acquired on many to engraved books bibliography. San lay a their hands large library time. One of...diamonds, privileged been able the gem mines of San on Elsewhere, Dirlam, Librarian, Boulder, Association... In the United States the Gemological natural San supplying jeweler, Gemmological on Gemological...also of Altadena and John G Streeter of San Diego County in ac- the collection to books gemolo-...preeminent devoted peripheral the curious other crystal gazing, and culture but which gemstones. are |  | | Book (edition) | | mind that an heavily induded or fractured single crystal may show an aggregate reaction. Some non-crystalline...Synthetic yellow, orangy, brownish, green, blue, grayish blue, colorless. Synthetic irradiated: green Synthetic...may be changed to (brownish)-green, greenish blue, blue, black. Subsequent heating produce bright fancy...brownish-orange, pink-(purpllsh) diamonds. GREEN / BLUE ZJNCITE TETRA CUBIC SPEC.GRAV. RANGE SPECIFIC...lib: extremely rare, conduct electricity: most are blue (lo-brownish-gray) FRACTURE FILLED / LASER DRILLED |  | | Book | | SMYTH, M.A., F.R.S., LECTURER ON MINERALOGY AND MINING IN THE | ROYAL SCHOOL OF MINES, TRENHAM REEKS...Percy, M.D., F.R.S. Geology - A. C. Ramsay, F.R.S. Mining - -> - - - Mineralogy ſ " -> - Warington...SMYTH, M.A., F.R.S., LECTURER ON MINERALOGY AND MINING IN THE ROYAL SCHOOL OF MINES, TRENHAM REEKS,...Professor Huxley, and a descriptive Catalogue of the Mining, Metallurgical, and Geological Models by Mr. H... - Native Copper - Red and Black Oxides . . Blue and Green Carbonates Silicate of Copper Arseniates |  | | Book | | rocks ae Ne ae se 145 x1 Gemstones: 1 — Blue axe Si oe a 200 xu Gemstones: 2 — Red ee...finger. It is thus best to hold the individual crystal during the hardness test. Specific Gravity. The...along definite planes which are related to their crystal shape and internal structure. Some minerals cannot...frequently found in close association with the deep azure blue azurite (Plate II.12). Another example among ore...scientific name of the mineral, commonly used names and mining names are also shown. Obsolete names have been | | | Book | | 136 x Metamorphic rocks 145 X1 Gemstones: l - Blue 200 XII Gemstones: 2 - Red 209 XIII Gemstones...finger. It is thus best to hold the individual crystal during the hardness test. Specific Gravity. The...along definite planes which are related to their crystal shape and internal structure. Some minerals cannot...frequently found in close association with the deep azure blue azurite (Plate II.12). Another example among ore...scientific name of the mineral, commonly used names and mining names are also shown. Obsolete names have been |  | | Book (edition) | | the mineralogical names given to the classes of crystal-symmetry are those employed by Dana in his Text-book...nomenclature which expresses the physical symmetry of a crystal as well as its external form. For kind help in...sister, Miss J. Miers, to whom also many of the crystal figures are due. Many of the remainder have been...17 Derivation of Forms from the Cube ..... 18 Crystal-Axes ........ 21 Law of Rational Intercepts ..... 28 Projection ......... 28 The Angle between Crystal Faces ..... 31 The Use of Symbols ....... 81 Zone |  | | Book (edition) | | W, Gardner *oke -; UNIVERSITY OF CALIFORNIA SAN FRANCISCO LIBRARY Digitized by the Internet Archive...CH 3 COOC 2 H 5 Solutions of indulines in Acetin Blue. See acetins (acetic esters of glycerol). Induline...1*9 and is used in rubber mixings. , Acetylene Blue 6B, BX, 3R. Dyestuffs. These colours dye cotton...-naphthol. Acid Alizarin Blue BB, GR (Alizarin blue BB, GR, Alizarin Acid Blue BB). A ACI 9 It is the...acid, C 14 H 6 14 S 2 Na 2 from an acid bath, and blue from subsequent chroming. The mark GR gives - |
|
Blue Crystal Mine, Lisbon Valley Mining District, San Juan County, Utah, USA