 | | Journal (issue) | | / Volume 34 / No. 6 Columns p. 476 467 What’s New Automated melee screening device|DFI Mid-UV Laser+...Newsletter|Microcrystalline silica online lectures|What’s New in the Mineral World? 470 Practical Gemmology A... Feature Articles 490 Green-Luminescing Hyalite Opal from Zacatecas, Mexico By Emmanuel Fritsch, Peter...colour appearance of this rough and cut hyalite opal from Zacatecas, Mexico, is due to its green daylight-induced...specimen and 5.67 ct stone are courtesy of Kristalle, Laguna Beach, California, USA. Photo by Orasa Weldon |  | | Book | | THE BOOK OF yJ An>> aT -v • J[. Illustrated. $9.^5 ISBN 0-8019-0964-3 OF VERMONT ENT OF LIBRARIES...as an authority in the lapidary field. Beginning with a description of agate, he proceeds to an interesting...varieties, with favorite location of quartz agate, opal wood — collectors. The petrified gems throughout... tell about other quartz varieties such as the opal, and petrified wood; and to give him the most complete...received, and one always fears that the name of an important adviser may be left out. However, in the |  | | Journal (issue) | | • Printed in the U.S.A. 09 0 74470 02033 2 New Column! TUMBLING TALK 2 ROCKNGEM.COM VOL. 50...50 Years By Helen Serras-Herman Catching Up With New Arrival — Cutting Edge Supply By Antoinette Rahn...decided to drive around and see if I could find some new area. I spotted some rocky looking hilltops in plowed...to see if I could get permission to search this new area. I stopped at the farmhouse, and keeping my... so I only walked out where he suggested, to get an idea of what’s there. I walked out maybe 75 yards |  | | Journal (issue) | | May Jewel of Royalty With WorldWide Popularity 20 NEW MEXICO’S HARDING MINE The Must-See Pegmatite of the...rockngem.com 4 ROCKNGEM.COM We’v ! d e v e Mo NEW LOCATION Y Covington Same Great Product 520 E...Pakistan. With grades of light rich blue Lapis to stunning dark royal blue Lapis. Please stop by our website...received a shipment of High Grade Welo opal from Ethiopia-posting new opal parcels daily. Please call or order...Mine, San Diego County, CA Watercolor by Frederick C. Wilda© REVELATIONS IN STONE Open To Offers On |  | | Journal (issue) | | ISSUE 10 • OCTOBER 2020 FASCINATING FACTS ABOUT OPAL CLAIM TO COPPER FAME Butte’s Mining Legacy DYNAMIC...Printed in the U.S.A. 10 0 74470 02033 2 WIN AN OPAL PRIZE PACK! Details on page 6… 2 ROCKNGEM.COM...TOURMALINE CRYSTALS 50 SOMETHING NEW IN BIGGS JUNCTION Exploring a New Deposit Discovery in North Central...By Steve Voynick 28 10 FASCINATING FACTS ABOUT OPAL By John L. Carver and Bill Halepeska 62 REGULAR...specimen of opal from the prolific USA locality of Butte, Oregon, reveals a carving-grade opal as it is | | | Book | | recognized as an authority in the lapidary field. Beginning with a description of agate, he proceeds to an interesting...ties and forms of quartz gems other than agate, opal and its varieties, and petrified wood a great favorite...tell abot1t otl1er Cttiartz varieties st1ch as the opal, jasper, ancl petrified wood; a11d to give l1in1...received, and one al,vays fears that the na111e of an in1portant aclviser may be left out. Ho,vever, in...12 were also const1lted. Nlany other sot1rces in an extensive library on the st1bject were const1lted |  | | Journal (issue) | | mmigration Ol ice. Opal Mines, Wbite Cllifs, New South Wales. Oourte8JI Special Opal Nuinber Granite and...magazine• .'-============================ r ROCH. S an d MINERALS A NON-TECHNICAL MAGAZINE --'ON-MINI...1Iuseum. B y 1rilli<1m F. Foshag The Geology of Opal. By, Oilb rrt Hart.. . . . . . . . . . . . . . ...Quest of the Opal. B!I If. T. Strnng.. . ....................... . . ('(}Jor Play in Opal. B.11, Il. E... . . . . . . . . . . . . . . . . . . . . . 'fbe Opal. JJy E11,qe11e Jr. B1"11k..................... |  | | Book | | your own tumbling and grinding machineto cutting an emerald !The extensive reference section describes...something about the transformation thatturns a stone into a gem, wili find as much in this book as the...mineral-collector and the experienced lapidary for whom itwill be an invaluable work of reference. FOKRieterehee 543...Left: Magnificent hexagonal crystals of chaiybite, an iron carbonate. The triangular 'growth shadows' that...are visible represent the form of the crystals at an earlier stage in th eir de veiopm en t This book | | | Book | | your own tumbling and grinding machine to cutting an emerald! The extensive reference section describes...something about the transformation that turns a stone into a gem, will find as much in this book as the...a... “he experienced lapidary for whom it will be an invaluable work of reference. LIBRARY CHICAGO PUBLIC...CEMSIONES Edited by Michael ODonoghve CRESCENT BOOKS - New York © Orbis Publishing Limited, London and Istituto...eft: Magnificent hexagonal crystals of chalybite, an iron This book has several purposes: to introduce |  | | Book (volume) | | MODIFIED DRIFT By WARREN ae OF GLACIAL IN NEW HAMPSHIRE. UPHAM, DRIFT. APPENDIX II. TO PARTS...Hawes. INTRODUCTION, . . . . .. THE MINERALOGY OF NEW HAMPSHIRE, LITHOLOGY, INDEX TO PART IV, APPENDIX...dune, Lebanon, 3 3 Fig. 12, Profile of kame of Connecticut valley, Fig. 13, Section in Springfield and Charlestown...Rockingham, Vt., 3 : 18, Section in Bridgewater and New Hampton, 19, Section in Concord, Fig. 20, Section...Great rock, Wentworth, 268 270 . . 58, Glaciated stone, Moultonborough, - 59, Section in till, Portland |  | | Journal (issue) | | and the Thermal Properties of Gems D. B. Hoover Opal from Queretaro, Mexico: Occurrence and Inclusions...Koiv~da,Chuck Fryer, and Peter C . Keller NOTES A N D NEW TECHNIQUES 97 The Newly Expanded Deutsches Edelsteinmuseum...provide information and samples before marketing a new product, some make continuing supplies available...which little has been reported in recent years. After an initial burst of activity 100 years ago, the production...impeded their exploitation. This article, the result of an expedition to the deposits in 1981, chronicles the |  | | Book | | MINEEALOGT. IiONDOlT PEINTED BT SPOTTISWOODE AND NEW-STEEET SQUABE CO. : aiOSSAEY OP imERALOaY. /...Phisicke, 1601. Theophrastus's History of Stones, with an English version by Sir edition, 1774. The American...Journal Annales des Mines. of Science and Arts. New Haven, U.S. Paris. Edinburgh Philosophical Journal...sciences, demands industry and attention and to become an accomplished mineralogist much and carean acquaintance...importance. It is true minerals frequently occur in an amorphous state ; in which case, the particles of |  | | Book | | NOSTRAND PRINCETON, COMPANY, NEW INC. JERSEY LONDON TORONTO NEW YORK D. VAN NOSTRAND COMPANY...Alexander St., Princeton, New Jersey (Principal office) 24 West 40 Street, New York 18, New York D. VAN NosTRAND...and have made virtually no use of fluorescence as an aid to identification. In this book, the fluorescent...readers. All, without doubt, will have use for a new short cut to rapid min- eral identification. The...each color—enable the user to turn his UV lamp on an unknown mineral, note its glowing fluorescence, and | | | Book | | Society D. VAN TORONTO NOSTRAND PRINCETON, NEW COMPANY, NEW YORK JERSEY INC. LONDON D. VAN 120 Alexander...NostrRAND D. VAN New York 18, York New Street, 40 West (Principal office) Jersey New St., Princeton...and have made virtually no use of fluorescence as an aid to identifi- cation. In this book, the fluorescent...readers. doubt, All, without will have use for a new short cut to rapid min- eral identification....each color—enable the user to turn his UV lamp on an unknown mineral, note its glowing fluorescence, |  | | Book | | 142 144 146 150 152 154 Gold and power Opal Halley’s Comet opal Moonstone Shimmering colour Sunstone Labradorite...were buried in jade suits, in the belief that this stone conferred a form of immortality; similarly, the...would soon be joining him in Paradise. Sometimes, an entire industry could arise from a gemstone’s associations...celebrities – all want to be photographed wearing an exquisite piece by one of the great names in modern...was given to Queen Mary of England in the 1550s, as an engagement present. It was later owned by Margaret |  | | Book (edition) | | HARVEY HOUSE INC. Publishers Irvington-on-Hudson, New York i / tf J* Jt .O" ex ,.o "Ou •o-' •o...Unappreciated gemstones Tourmaline, the Electric stone Gemstone— Zircon, the Forgotten Gem- — Kunzitc—... 99 Chapter 14. Opal Stone Jelly— "Fire" and "Precious" Opal— White and Black Opal Chapter 15. 102...summer day 1701, a poor native, sifting pebbles in an in Indian diamond mine, found one of the world's...like a gem. and polished, the largest is a dull stone. diamond the But this native ever A rough |  | | Report (edition) | | .......................... 108 Chapter 13 Opal 109 Opal — gemstone properties .................................................................. 109 Opal terminology ........................................................................ 110 Precious opal in Western Australia ................................................................. 113 Common opal ...................................................................................... 114 Common opal in Western Australia........................... |  | | Book (edition) | | Publications CHAPMAN & HALL London • Glasgow • New York • Tokyo • Melbourne • Madras Published by...2NZ, UK Chapman & Hall Inc.. 29 Wesl 351h S1ree1. New York NY llXl0I. US;\ Chapman & Hall Japan. Thomson...publica1ions) 'Third edi1ion'-Forcword. Rev. ed. of: An index of mim:ral species & varie1ics arranged chemically/...of Minemls was published and it soon proved to be an important and standard reference work for mineralogists...of Dr Andrew Clark. we arc able to welcome this new and expanded version. Like Dr Hey's. it is much more |  | | Book | | Fifth Avenue New York, New York 10003 Van Nostrand Reinhold International Company Limited 11 New Fetter Lane...BY TINO HAMMID VAN NOSTRAND REINHOLD ~ _ _ _ _ _ New York ~ S • • TABLE OF CONTENTS BRAZILIAN ALEXANDRITE...AUSTRALIAN PINK DIAMOND .................... 54 FANCY BLUE DIAMOND ........................ 58 FANCY BROWN.... 122 AUSTRALIAN BLACK OPAL ...................... 126 AUSTRALIAN WHITE OPAL ...................... 130...With Natural Colored Gemstones," MEXICAN FIRE OPAL .......................... 134 AMERICAN FRESHWATER |  | | Book | | States by DK Publishing 345 Hudson Street, New York, New York 10014 Copyright © 2016 Dorling Kindersley...Publishing Special Markets, 345 Hudson Street, New York, New York 10014 or SpecialSales@dk.com. Printed and...142 144 146 150 152 154 Gold and power Opal Halley’s Comet opal Moonstone Shimmering color Sunstone Labradorite...not a story. A story has a beginning, a middle, and an end. This book is a map, a codex, a tool to help...ventromedial prefrontal cortex (vmPFC), that both assigns an object its worth, and determines the depth of your |  | | Book | | Publications P.O. Box 13384 Los Angeles, CA 90013-0384 USA (Include a self-addressed, stamped envelope with...Price Factors in a Nutshell 9 Why the 4 C’s is Not an Adequate Pricing System Price Factors Explained 10...Malachite 47 Moonstone & Some Other Feldspars 47 Opal 49 Peridot 53 Ruby & Sapphire 54 Spinel 57 Tanzanite...Debit Cards 111 When Problems Arise 112 14. Choosing an Appraiser 115 How to Find a Qualified Independent...assist you when buying gems and jewelry. 1 Colored Stone Price Factors in a Nutshell The following factors |  | | Journal (issue) | | Bangkok Operation Jack S . D. Abraham NOTES A N D NEW TECHNIQUES 83 Pinpoint Illumination: A Controllable...Jensen and Ole V. Petersen Carving Gem-Quality Opal Theodore Grussing Two Notable Color-Change Garnets...von Kurr o f a t w i n chrysoberyl crystal. This stone, part of the Hixon Collection, i s at the Los Angeles...S A PROFESSIONAL SALESPERSON A S AN INSTRUCTING EMPLOYER A S AN AUTHORITY IN YOUR COMMUNITY you increase...how to separate natural from synthetic corundum, opal, alexandrite, a n d spinel, a s well as diamonds |  | | Report (issue) | | many features have in been elaborated; other words, an attempt has been made to harmonize scientific accuracy...are rife Thus, the dexterity of the Egyptians in stone-carving, several thousand years before the Christian...to the blossoms of the organic stones are found, an evaporation obviously countries. It burnt tropics...Aristotle and his pupil, Theophrastus, the latter writing an excelsixth century lent treatise Roman B. indicate...mineralogy. succession to the treasure-field marked an increase ira mineralogical knowledge and a fuller |  | | Book (volume) | | gem- since identical, are diamond, While the stone. jeweller they to largely specimens than ... next of time same graphite, beryllium. stone together as form been further, properly be...it essential same this In species and with an other primary crystalline largely opaque stones...and 195 included under minerals of bright a opal, cat’s-eye or much that transparent have occurrence...Stones STONES. the shall description include an dealing with rockThe minerals section mention |  | | Book (edition) | | the greatest possible help and value to its user, new developments and discoveries in the gemological field...of meriting the acceptance of this Dictionary as an international reference book for the gemological...meanings which have been suggested. However, many new alternate definitions have been added the book has...Director of thorities on gemstones the Precious Stone Laboratory, London Chamber of Commerce Dr. Sydney...Society of Great Britain and A. Espositer, lapidary of New York. George H. Marcher, Certified Gemologist, lapidist |
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