DOCSLIB.ORG

Understanding Gems

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Understanding Gems GemmologyThe Journal of Volume 35 / No. 4 / 2016 The Gemmological Association of Great Britain Contents GemmologyThe Journal of Volume 35 / No. 4 / 2016 COLUMNS p. 321 271 What’s New DiaPix Jewelry Imaging|DiaTrue screening system|GemTrue Ex- p. 287 perior tester|GLIS-3000 GEM Lu- minous Imaging System|J-Secure synthetic diamond detector|Solico and Synova diamond-cutting machines|CIBJO Congress 2016 presentations and special reports|GIT Lab Updates|USA lifts ban on Burmese ruby and jadeite|Margaritologia news- letter|David Friend Hall at the Yale Peabody Museum|Harvard ARTICLES Museum virtual tour|‘Jades for Life and Death’ online Feature Articles 294 Ruby and Pink Sapphire from Aappaluttoq, Greenland 274 Practical Gemmology By Christopher P. Smith, Andrew J. Fagan and Bryan Clark Anomalous behaviour of a Sumitomo synthetic diamond 308 Geology, Gemmological Properties and Preliminary on the reflectance meter Heat Treatment of Gem-Quality Zircon from the 276 Gem Notes Central Highlands of Vietnam Antigorite serpentine from north- By Le Thi-Thu Huong, Bui Sinh Vuong, Nguyen Thi Minh western Pakistan|‘Black’ axinite| Thuyet, Nguyen Ngoc Khoi, Somruedee Satitkune, Bhuwadol Beryl from Tanzania with phena- kite inclusions|Clinohumite from Wanthanachaisaeng, Wolfgang Hofmeister, Tobias Häger and Vietnam|Lace opal from Utah, Christoph Hauzenberger USA|Pollucite from Pakistan with polylithionite inclusions|Large 320 Identification of Reconstructed Amber from Different ruby matrix from Lu.c Yên, Periods Vietnam|Scapolite from Badakh- By Haibo Li, Jie Liang, Taijin Lu, Jun Zhang and Jun Zhou shan, Afghanistan|Tourmaline from Ife, Osun State, Nigeria| 330 Violet-to-Blue ‘Nuummite’ from Simiuttat, Greenland: Cat’s-eye väyrynenite from Pakistan|Quartzite and calcite Origin of Colour Appearance and Conditions of bangles resembling jadeite|Large Formation pink sapphire with diffusion- By Leander Franz, Tay Thye Sun, Richard Wirth, Christian de induced star|Mid-year 2016 Capitani and Loke Hui Ying Myanma Jade & Gems Emporium 342 Conferences 2nd European Mineralogical Conference|HRD Antwerp Symposium| Cover Photo: Greenland is poised to Geological Society of America|Gem-A Conference become a significant producer of rubies and pink sapphires. These 349 Gem-A Notices rubies recovered from the Aappaluttoq deposit weigh 0.29–2.53 ct and 364 Learning Opportunities were characterized for an article appearing in this issue (see pp. 294–306). 367 New Media Photo by Bilal Mahmood, AGL. 370 Literature of Interest The Journal is published by Gem-A in collaboration with SSEF and with the support of AGL and GIT. ISSN: 1355-4565, http://dx.doi.org/10.15506/JoG.2016.35.4 i The Journal of emmology G THE GEMMOLOGICAL ASSOCIATION OF GREAT BRITAIN Editor-in-Chief Production Editor Marketing Consultant Brendan M. Laurs Mary A. Burland Ya’akov Almor [email protected] [email protected] [email protected] 21 Ely Place Editorial Assistant Editor Emeritus Executive Editor London EC1N 6TD Carol M. Stockton Roger R. Harding Alan D. Hart UK Associate Editors t: +44 (0)20 7404 3334 Ahmadjan Abduriyim, Tokyo, Japan; Edward Boehm, RareSource, Chattanooga, Tennessee, f: +44 (0)20 7404 8843 USA; Maggie Campbell Pedersen, Organic Gems, London; Alan T. Collins, King’s College e: [email protected] London; John L. Emmett, Crystal Chemistry, Brush Prairie, Washington, USA; Emmanuel w: www.gem-a.com Fritsch, University of Nantes, France; Rui Galopim de Carvalho, Portugal Gemas, Lisbon, Portugal; Lee A. Groat, University of British Columbia, Vancouver, Canada; Thomas Registered Charity No. 1109555 Hainschwang, GGTL Laboratories, Balzers, Liechtenstein; Henry A. Hänni, GemExpert, A company limited by guarantee and Basel, Switzerland; Jeff W. Harris, University of Glasgow; Alan D. Hart, Gem-A, London; registered in England No. 1945780 Ulrich Henn, German Gemmological Association, Idar-Oberstein; Jaroslav Hyršl, Prague, Registered office: Palladium House, Czech Republic; Brian Jackson, National Museums Scotland, Edinburgh; Stefanos 1–4 Argyll Street, London W1F 7LD Karampelas, GRS Gemresearch Swisslab, Basel, Switzerland; Lore Kiefert, Gübelin Gem Lab Ltd., Lucerne, Switzerland; Hiroshi Kitawaki, Central Gem Laboratory, Tokyo, Japan; Michael S. Krzemnicki, Swiss Gemmological Institute SSEF, Basel; Shane F. McClure, Gemological Institute of America, Carlsbad, California; Jack M. Ogden, Striptwist Ltd., London; Federico Pezzotta, Natural History Museum of Milan, Italy; Jeffrey E. Post, President Smithsonian Institution, Washington DC, USA; Andrew H. Rankin, Kingston University, Maggie Campbell Pedersen Surrey; George R. Rossman, California Institute of Technology, Pasadena, USA; Karl Schmetzer, Petershausen, Germany; Dietmar Schwarz, AIGS Lab Co. Ltd., Bangkok, Vice Presidents Thailand; Menahem Sevdermish, GemeWizard Ltd., Ramat Gan, Israel; Guanghai Shi, David J. Callaghan China University of Geosciences, Beijing; James E. Shigley, Gemological Institute of Alan T. Collins America, Carlsbad, California; Christopher P. Smith, American Gemological Laboratories Noel W. Deeks Inc., New York, New York; Evelyne Stern, London; Elisabeth Strack, Gemmologisches E. Alan Jobbins, Institut Hamburg, Germany; Tay Thye Sun, Far East Gemological Laboratory, Singapore; Andrew H. Rankin Pornsawat Wathanakul, Gem and Jewelry Institute of Thailand, Bangkok; Chris M. Welbourn, Reading, Berkshire; Bert Willems, Leica Microsystems, Wetzlar, Germany; Bear Honorary Fellows Williams, Stone Group Laboratories LLC, Jefferson City, Missouri, USA; J.C. (Hanco) Zwaan, Gaetano Cavalieri National Museum of Natural History ‘Naturalis’, Leiden, The Netherlands. Terrence S. Coldham Emmanuel Fritsch Content Submission The Editor-in-Chief is glad to consider original articles, news items, conference/excursion Honorary Diamond Member reports, announcements and calendar entries on subjects of gemmological interest for Martin Rapaport publication in The Journal of Gemmology. A guide to the various sections and the preparation of manuscripts is given at www.gem-a.com/index.php/news-publications/publications/ Chief Executive Officer journal-of-gemmology/submissions, or contact the Production Editor. Alan D. Hart Subscriptions Gem-A members receive The Journal as part of their membership package, full details Council of which are given at www.gem-a.com/membership. Laboratories, libraries, museums and Justine L. Carmody – Chair similar institutions may become Direct Subscribers to The Journal. Kathryn L. Bonanno Paul F. Greer Advertising Kerry H. Gregory Enquiries about advertising in The Journal should be directed to the Marketing Consultant. J. Alan W. Hodgkinson For more information, see www.gem-a.com/index.php/news-publications/publications/ Nigel B. Israel journal-of-gemmology/advertising. Jack M. Ogden Richard M. Slater Database Coverage Christopher P. Smith The Journal of Gemmology is covered by the following abstracting and indexing services: Australian Research Council academic journal list, British Library Document Supply Branch Chairmen Service, Chemical Abstracts (CA Plus), Copyright Clearance Center’s RightFind Midlands – Georgina E. Kettle application, CrossRef, EBSCO (Academic Search International, Discovery North East – Mark W. Houghton Service and TOC Premier), Gale/Cengage Learning Academic OneFile, GeoRef, South East – Veronica Wetten Mineralogical Abstracts, ProQuest, Scopus and the Thomson Reuters’ Emerging South West – Richard M. Slater Sources Citation Index (in the Web of Science). Copyright and Reprint Permission For full details of copyright and reprint permission contact the Editor-in-Chief. The Journal of Gemmology is published quarterly by Gem-A, The Gemmological Association of Great Britain. Any opinions expressed in The Journal are understood to be the views of the contributors and not necessarily of the publisher. Printed by DG3 (Europe) Ltd. © 2016 The Gemmological Association of Great Britain Cert no. TT-COC-002454 ™ ISSN: 1355-4565 Understanding Gems ii The Journal of Gemmology, 35(4), 2016 What’s New INSTRUMENTATION DiaPix Jewelry Imaging System can identify diamond, synthetic moissanite and In March 2016, OGI Systems Ltd. (Ramat Gan, Israel) cubic zirconia, as well as help distinguish natural released DiaPix Jewelry, an “all in one video imaging from synthetic ruby and sapphire. Both machine” that captures mounted and loose gems can be high-definition images and tested. Measuring 150 × 33 × 360° videos of loose gem- 23 mm and weighing 42 g, it stones as well as jewellery is highly portable. Visit www. of any size. The unit meas- dikaitools.com/en/Diamond_ ures 42 × 24 × 37 cm, and Testers_Moissanite_ the system includes video Testers/20160404/432.html. CMS editing tools that allow the user to rapidly upload in- teractive videos to the internet. Visit www.ogisystems. com/diapixjewel.html. CMS GLIS-3000 GEM Luminous Imaging System Released in October 2015 by Biaoqi Guang- DiaTrue Diamond Screening System zhou Electronic Science Released by OGI Systems Ltd. in September 2016, Technology Co. Ltd. the DiaTrue is designed to screen colourless natural (Guangzhou, China), the diamonds, HPHT synthetic diamonds and HPHT-treat- GLIS-3000 GEM Lumi- ed CVD synthetic diamonds. nous Imaging System is Both mounted and unmount- designed to quickly test ed samples can be tested, batches of loose dia- the latter including parcels monds (rough or cut, including melee), as well as and individual gems from mounted stones. The instrument contains a UV 0.01 to ~20 ct. The system spectrometer and excites
Load more

Recommended publications
  • EP SAKHAROV PRIZE NETWORK NEWSLETTER May 2014
    EP SAKHAROV PRIZE NETWORK NEWSLETTER May 2014 EUROPEAN YOUTH EVENT (EYE) ATTENDED BY SAKHAROV LAUREATES Olivier Basille, representing 2005 Sakharov Prize Laureate Reporters Without Borders, and Kirill Koroteev representing Memorial, the 2009 Laureate, took part in the EYE in Strasbourg from 9-11 May. The event brought together 5,000 Europeans aged 16-30. Basille urged Europe's youth to get involved in the promotion of human rights saying that "courage has to be learnt; people should not be afraid to adopt non-anonymity when tackling issues that require courage"; he also highlighted the importance of social media for democracy, and the need to fight restrictive media laws. Koroteev suggested that young people use social media to spread the word about rights contraventions, and that the EU not condone violations: "those who do not take measures against those who do not respect human rights are considered supporters of the wrongdoings of non-democratic regimes". Memorial to register as a foreign agent; criticises the Justice Ministry's proposal to close NGOs extra-judicially and expresses concerns about the possibility of turning off social media 23-03-2014: A District Court of Moscow confirmed the Prosecutor's order that Memorial Human Rights Centre, the 2009 Sakharov Laureate, is obliged to register as a "foreign agent". The decision came on the same day as the adoption by the Russian Duma of provisions that will allow the Ministry of Justice to register NGOs as “foreign agents” at its own initiative, without a court decision. 2009 Sakharov Prize Laureates Lyudmila Alexeyeva and Memorial have spoken out against the proposal.
    [Show full text]
  • Geochemical Alteration of Pyrochlore Group Minerals: Pyrochlore Subgroup
    American Mineralogist, Volume 80, pages 732-743, 1995 Geochemical alteration of pyrochlore group minerals: Pyrochlore subgroup GREGORY R. LUMPKIN Advanced Materials Program, Australian Nuclear Science and Technology Organization, Menai 2234, New South Wales, Australia RODNEY C. EWING Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, New Mexico 87131, U.S.A. ABSTRACT Primary alteration of uranpyrochlore from granitic pegmatites is characterized by the substitutions ADYD-+ ACaYO, ANaYF -+ ACaYO, and ANaYOI-I --+ ACaYO. Alteration oc- curred at ""450-650 °C and 2-4 kbar with fluid-phase compositions characterized by relatively low aNa+,high aeaH, and high pH. In contrast, primary alteration of pyrochlore from nepheline syenites and carbonatites follows a different tre:nd represented by the sub- stitutions ANaYF -+ ADYD and ACaYO -+ ADYD. In carbonatites, primary alteration of pyrochlore probably took place during and after replacement of diopside + forsterite + calcite by tremolite + dolomite :t ankerite at ""300-550 °C and 0-2 kbar under conditions of relatively low aHF, low aNa+,low aeaH, low pH, and elevated activities of Fe and Sr. Microscopic observations suggest that some altered pyrochlor1es are transitional between primary and secondary alteration. Alteration paths for these specimens scatter around the trend ANaYF -+ ADYD. Alteration probably occurred at 200-350 °C in the presence of a fluid phase similar in composition to the fluid present during primary alteration but with elevated activities of Ba and REEs. Mineral reactions in the system Na-Ca-Fe-Nb-O-H indicate that replacement of pyrochlore by fersmite and columbite occurred at similar conditions with fluid conpositions having relatively low aNa+,moderate aeaH, and mod- erate to high aFeH.Secondary alteration « 150 °C) is charactlerized by the substitutions ANaYF -+ ADYD,ACaYO -+ ADYD,and ACaXO -+ ADXDtogether with moderate to extreme hydration (10-15 wt% H20 or 2-3 molecules per formula unit).
    [Show full text]
  • Washington State Minerals Checklist
    Division of Geology and Earth Resources MS 47007; Olympia, WA 98504-7007 Washington State 360-902-1450; 360-902-1785 fax E-mail: [email protected] Website: http://www.dnr.wa.gov/geology Minerals Checklist Note: Mineral names in parentheses are the preferred species names. Compiled by Raymond Lasmanis o Acanthite o Arsenopalladinite o Bustamite o Clinohumite o Enstatite o Harmotome o Actinolite o Arsenopyrite o Bytownite o Clinoptilolite o Epidesmine (Stilbite) o Hastingsite o Adularia o Arsenosulvanite (Plagioclase) o Clinozoisite o Epidote o Hausmannite (Orthoclase) o Arsenpolybasite o Cairngorm (Quartz) o Cobaltite o Epistilbite o Hedenbergite o Aegirine o Astrophyllite o Calamine o Cochromite o Epsomite o Hedleyite o Aenigmatite o Atacamite (Hemimorphite) o Coffinite o Erionite o Hematite o Aeschynite o Atokite o Calaverite o Columbite o Erythrite o Hemimorphite o Agardite-Y o Augite o Calciohilairite (Ferrocolumbite) o Euchroite o Hercynite o Agate (Quartz) o Aurostibite o Calcite, see also o Conichalcite o Euxenite o Hessite o Aguilarite o Austinite Manganocalcite o Connellite o Euxenite-Y o Heulandite o Aktashite o Onyx o Copiapite o o Autunite o Fairchildite Hexahydrite o Alabandite o Caledonite o Copper o o Awaruite o Famatinite Hibschite o Albite o Cancrinite o Copper-zinc o o Axinite group o Fayalite Hillebrandite o Algodonite o Carnelian (Quartz) o Coquandite o o Azurite o Feldspar group Hisingerite o Allanite o Cassiterite o Cordierite o o Barite o Ferberite Hongshiite o Allanite-Ce o Catapleiite o Corrensite o o Bastnäsite
    [Show full text]
  • Analytical Methods to Differentiate Romanian Amber and Baltic Amber for Archaeological Applications
    Cent. Eur. J. Chem. • 7(3) • 2009 • 560-568 DOI: 10.2478/s11532-009-0053-8 Central European Journal of Chemistry Analytical methods to differentiate Romanian amber and Baltic amber for archaeological applications Research Article Eugenia D. Teodor1*, Simona C. Liţescu1, Antonela Neacşu2, Georgiana Truică1 Camelia Albu1 1 National Institute for Biological Sciences, Centre of Bioanalysis, Bucharest, 060031, Romania 2 University of Bucharest, Faculty of Geology and Geophysics, Bucharest, 010041, Romania Received 27 August 2008; Accepted 02 March 2009 Abstract: The study aims to establish several definite criteria which will differentiate Romanian amber and Baltic amber to certify the local or Baltic origin of the materials found in archaeological sites on the Romanian territory, by using light microscopy and performing analytical methods, such as Fourier transform infrared spectroscopy-variable angle reflectance and liquid chromatography with mass spectrometry detection. Experiments especially by Fourier transformed infrared spectroscopy, were applied to a wide range of samples with controlled origin. The methods were optimised and resulted in premises to apply the techniques to analysis of the archaeological material. Keywords: Romanian amber • FTIR-VAR • LC-MS • Light microscopy © Versita Warsaw and Springer-Verlag Berlin Heidelberg. 1. Introduction (Oligocene). The resin-bearing strata are intercalated within the lower and medium part of the lower Kliwa Amber is a fossil resin originating from different types sandstone (0.20-1.40 m). They consist of siliceous clay of Conifers and certain flowering trees, especially in hot (0.20-1.40 m) always containing thin intercalations of climates. From the mineralogical point of view amber bituminous shales (2-5 cm) and of preanthracite coal could be considered a mineraloid.
    [Show full text]
  • Exceptional Works of Art 2017 PUSHKIN ANTIQUES – MAYFAIR –
    Exceptional works of art 2017 PUSHKIN ANTIQUES – MAYFAIR – At Pushkin Antiques we specialise in unique statement Each item is professionally selected and inspected pieces of antique silver as well as branded luxury items, to ensure we can give our customers a guarantee of stylish interior articles and objects d’art. authenticity and the required peace of mind when buying from us. Since the inception of our company, we’ve been at the forefront of online sales for high end, quality antiques. Our retail gallery is located on the lower floor of the world Our presence on most major platforms has allowed us famous Grays Antiques Centre in the heart of Mayfair. to consistently connect exquisite pieces with the most discerning collectors and interior decorators from all over the world with particular focus on the demands of the markets from the Far East, the Americas, Europe & Russia. www.pushkinantiques.com [email protected] We aim to provide the highest quality in every department: rare hand crafted articles, accurate item descriptions (+44) 02085 544 300 to include the history and provenance of each item, an (+44) 07595 595 079 extensive photography report, as well as a smooth buying process thus facilitating an efficient and pleasant online Shop 111, Lower Ground Floor, Grays Antiques Market. experience. 58 Davies St, London. W1K 5AB, UK. ALEX PUSHKIN OLGA PUSHKINA DUMITRU TIRA Founder & Director Managing Director Photographer Contents 6 ENGLISH SILVER 42 CHINESE SILVER 56 JAPANESE SILVER 66 INDIAN SILVER 78 BURMESE SILVER 86 CONTINENTAL SILVER 100 FRENCH SILVER 108 GERMAN SILVER 118 RUSSIAN SILVER 132 OBJECTS OF VERTU English Silver The style and technique in manufacturing silver during Hester Bateman (1708-1794) was one of the greatest this era (over 100 years) changed radically, reflecting silversmiths operating in this style, she is the most the variations in taste, society, costumes, economic and renowned and appreciated female silversmith of all time.
    [Show full text]
  • Congressional-Executive Commission on China Annual
    CONGRESSIONAL-EXECUTIVE COMMISSION ON CHINA ANNUAL REPORT 2016 ONE HUNDRED FOURTEENTH CONGRESS SECOND SESSION OCTOBER 6, 2016 Printed for the use of the Congressional-Executive Commission on China ( Available via the World Wide Web: http://www.cecc.gov U.S. GOVERNMENT PUBLISHING OFFICE 21–471 PDF WASHINGTON : 2016 For sale by the Superintendent of Documents, U.S. Government Publishing Office Internet: bookstore.gpo.gov Phone: toll free (866) 512–1800; DC area (202) 512–1800 Fax: (202) 512–2104 Mail: Stop IDCC, Washington, DC 20402–0001 VerDate Mar 15 2010 19:58 Oct 05, 2016 Jkt 000000 PO 00000 Frm 00003 Fmt 5011 Sfmt 5011 U:\DOCS\AR16 NEW\21471.TXT DEIDRE CONGRESSIONAL-EXECUTIVE COMMISSION ON CHINA LEGISLATIVE BRANCH COMMISSIONERS House Senate CHRISTOPHER H. SMITH, New Jersey, MARCO RUBIO, Florida, Cochairman Chairman JAMES LANKFORD, Oklahoma ROBERT PITTENGER, North Carolina TOM COTTON, Arkansas TRENT FRANKS, Arizona STEVE DAINES, Montana RANDY HULTGREN, Illinois BEN SASSE, Nebraska DIANE BLACK, Tennessee DIANNE FEINSTEIN, California TIMOTHY J. WALZ, Minnesota JEFF MERKLEY, Oregon MARCY KAPTUR, Ohio GARY PETERS, Michigan MICHAEL M. HONDA, California TED LIEU, California EXECUTIVE BRANCH COMMISSIONERS CHRISTOPHER P. LU, Department of Labor SARAH SEWALL, Department of State DANIEL R. RUSSEL, Department of State TOM MALINOWSKI, Department of State PAUL B. PROTIC, Staff Director ELYSE B. ANDERSON, Deputy Staff Director (II) VerDate Mar 15 2010 19:58 Oct 05, 2016 Jkt 000000 PO 00000 Frm 00004 Fmt 0486 Sfmt 0486 U:\DOCS\AR16 NEW\21471.TXT DEIDRE C O N T E N T S Page I. Executive Summary ............................................................................................. 1 Introduction ...................................................................................................... 1 Overview ............................................................................................................ 5 Recommendations to Congress and the Administration ..............................
    [Show full text]
  • Iacs2017 Conferencebook.Pdf
    Contents Welcome Message •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 4 Conference Program •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 7 Conference Venues ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 10 Keynote Speech ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 16 Plenary Sessions •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 20 Special Sessions •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 34 Parallel Sessions •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 40 Travel Information •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 228 List of participants ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 232 Welcome Message Welcome Message Dear IACS 2017 Conference Participants, I’m delighted to welcome you to three exciting days of conferencing in Seoul. The IACS Conference returns to South Korea after successful editions in Surabaya, Singapore, Dhaka, Shanghai, Bangalore, Tokyo and Taipei. The IACS So- ciety, which initiates the conferences, is proud to partner with Sunkonghoe University, which also hosts the IACS Con- sortium of Institutions, to organise “Worlding: Asia after/beyond Globalization”, between July 28 and July 30, 2017. Our colleagues at Sunkunghoe have done a brilliant job of putting this event together, and you’ll see evidence of their painstaking attention to detail in all the arrangements
    [Show full text]
  • MAGAZINE • LEAWOOD, KS SPECIAL EDITION 2016 ISSUE 3 Fine Jewelers Magazine
    A TUFTS COMMUNICATIONS fine jewelry PUBLICATION MAZZARESE MAGAZINE • LEAWOOD, KS SPECIAL EDITION 2016 ISSUE 3 fine jewelers magazine Chopard: Racing Special The New Ferrari 488 GTB The Natural Flair of John Hardy Black Beauties Omega’s New 007 SPECIAL EDITION 2016 • ISSUE 3 MAZZARESE FINE JEWELERS MAGAZINE • SPECIAL EDITION 2016 welcome It is our belief that we have an indelible link with the past and a responsibility to the future. In representing the fourth generation of master jewelers and craftsmen, and even as the keepers of a second generation family business, we believe that the responsibility to continually evolve and develop lies with us. We endeavor to always stay ahead of the latest jewelry and watch trends and innovations. We stay true to our high standards and objectives set forth by those that came before us by delivering a jewelry experience like no other; through the utmost attention to service, knowledge and value. Every great story begins with a spark of inspiration. We are reminded day after day of our spark of inspiration: you, our esteemed customer. Your stories help drive our passion to pursue the finest quality pieces. It is a privilege that we are trusted to provide the perfect gift; one that stands the test of time and is passed along through generations. We find great joy in assisting the eager couple searching for the perfect engagement ring, as they embark on a lifetime of love, helping to select a quality timepiece, or sourcing a rare jewel to mark and celebrate a milestone. We are dedicated to creating an experience that nurtures relationships and allows those who visit our store to enter as customers, but leave as members of our family.
    [Show full text]
  • Brief Report Acta Palaeontologica Polonica 59 (4): 927–929, 2014
    Brief report Acta Palaeontologica Polonica 59 (4): 927–929, 2014 Estimating fossil ant species richness in Eocene Baltic amber DAVID PENNEY and RICHARD F. PREZIOSI Fossil insects in amber are often preserved with life-like fidel- (Wichard and Grevin 2009), has approximately 3500 species of ity and provide a unique insight to forest ecosystems of the arthropods described from it (Weitschat and Wichard 2010), and geological past. Baltic amber has been studied for more than is still being extracted from the ground in considerable quanti- 300 years but despite the large number of described fossil ties. For example, it has been estimated that approximately 510 species (ca. 3500 arthropods) and abundance of fossil mate- tonnes of amber were extracted in the Baltic region during the rial, few attempts have been made to try and quantify sta- year 2000 and that approximately two million (a very crude tistically how well we understand the palaeodiversity of this estimate) new inclusions from Baltic amber alone should be remarkable Fossil-Lagerstätte. Indeed, diversity estimation available for study each year (e.g., Clark 2010). Indeed, Klebs is a relatively immature field in palaeontology. Ants (Hyme- recognized the need for quantifying the palaeodiversity of am- noptera: Formicidae) are a common component of the amber ber inclusions at the turn of the twentieth century (Klebs 1910). palaeobiota, with more than 100 described species represent- Klebs (1910) investigated an unsorted Baltic amber sam- ing approximately 5% of all inclusions encountered. Here ple of 200 kg directly from the mine and documented a total we apply quantitative statistical species richness estimation of 13 877 inclusions, but these were identified only to order.
    [Show full text]
  • Optical Properties of Common Rock-Forming Minerals
    AppendixA __________ Optical Properties of Common Rock-Forming Minerals 325 Optical Properties of Common Rock-Forming Minerals J. B. Lyons, S. A. Morse, and R. E. Stoiber Distinguishing Characteristics Chemical XI. System and Indices Birefringence "Characteristically parallel, but Mineral Composition Best Cleavage Sign,2V and Relief and Color see Fig. 13-3. A. High Positive Relief Zircon ZrSiO. Tet. (+) 111=1.940 High biref. Small euhedral grains show (.055) parallel" extinction; may cause pleochroic haloes if enclosed in other minerals Sphene CaTiSiOs Mon. (110) (+) 30-50 13=1.895 High biref. Wedge-shaped grains; may (Titanite) to 1.935 (0.108-.135) show (110) cleavage or (100) Often or (221) parting; ZI\c=51 0; brownish in very high relief; r>v extreme. color CtJI\) 0) Gamet AsB2(SiO.la where Iso. High Grandite often Very pale pink commonest A = R2+ and B = RS + 1.7-1.9 weakly color; inclusions common. birefracting. Indices vary widely with composition. Crystals often euhedraL Uvarovite green, very rare. Staurolite H2FeAI.Si2O'2 Orth. (010) (+) 2V = 87 13=1.750 Low biref. Pleochroic colorless to golden (approximately) (.012) yellow; one good cleavage; twins cruciform or oblique; metamorphic. Olivine Series Mg2SiO. Orth. (+) 2V=85 13=1.651 High biref. Colorless (Fo) to yellow or pale to to (.035) brown (Fa); high relief. Fe2SiO. Orth. (-) 2V=47 13=1.865 High biref. Shagreen (mottled) surface; (.051) often cracked and altered to %II - serpentine. Poor (010) and (100) cleavages. Extinction par- ~ ~ alleL" l~4~ Tourmaline Na(Mg,Fe,Mn,Li,Alk Hex. (-) 111=1.636 Mod. biref.
    [Show full text]
  • Historical Painting Techniques, Materials, and Studio Practice
    Historical Painting Techniques, Materials, and Studio Practice PUBLICATIONS COORDINATION: Dinah Berland EDITING & PRODUCTION COORDINATION: Corinne Lightweaver EDITORIAL CONSULTATION: Jo Hill COVER DESIGN: Jackie Gallagher-Lange PRODUCTION & PRINTING: Allen Press, Inc., Lawrence, Kansas SYMPOSIUM ORGANIZERS: Erma Hermens, Art History Institute of the University of Leiden Marja Peek, Central Research Laboratory for Objects of Art and Science, Amsterdam © 1995 by The J. Paul Getty Trust All rights reserved Printed in the United States of America ISBN 0-89236-322-3 The Getty Conservation Institute is committed to the preservation of cultural heritage worldwide. The Institute seeks to advance scientiRc knowledge and professional practice and to raise public awareness of conservation. Through research, training, documentation, exchange of information, and ReId projects, the Institute addresses issues related to the conservation of museum objects and archival collections, archaeological monuments and sites, and historic bUildings and cities. The Institute is an operating program of the J. Paul Getty Trust. COVER ILLUSTRATION Gherardo Cibo, "Colchico," folio 17r of Herbarium, ca. 1570. Courtesy of the British Library. FRONTISPIECE Detail from Jan Baptiste Collaert, Color Olivi, 1566-1628. After Johannes Stradanus. Courtesy of the Rijksmuseum-Stichting, Amsterdam. Library of Congress Cataloguing-in-Publication Data Historical painting techniques, materials, and studio practice : preprints of a symposium [held at] University of Leiden, the Netherlands, 26-29 June 1995/ edited by Arie Wallert, Erma Hermens, and Marja Peek. p. cm. Includes bibliographical references. ISBN 0-89236-322-3 (pbk.) 1. Painting-Techniques-Congresses. 2. Artists' materials- -Congresses. 3. Polychromy-Congresses. I. Wallert, Arie, 1950- II. Hermens, Erma, 1958- . III. Peek, Marja, 1961- ND1500.H57 1995 751' .09-dc20 95-9805 CIP Second printing 1996 iv Contents vii Foreword viii Preface 1 Leslie A.
    [Show full text]
  • The Analysis, Identification and Treatment of an Amber Artifact
    GUEST PAPER THE ANALYSIS, IDENTIFICATION AND TREATMENT OF AN AMBER ARTIFACT by Niccolo Caldararo, Jena Hirschbein, Pete Palmer, Heather Shepard This study describes the identification and treatment of an amber necklace, which came into the conservation lab of Conservation Art Service, with an opaque bloom caused by a previous cleaning with a household ammonia cleanser. This paper also includes an overview of amber and its historical use, methods to definitively identify amber, and the identification and treatment of this particular object using infrared spectroscopy. mber is a fossilized tree resin, formed through a com- resin” and amber. The copal is then incorporated into the plex series of steps over millions of years. Its chemi- earth, where it continues to polymerize and release vola- Acal composition varies depending on the origin of the tile compounds until it is completely inert, at which point resin, but Baltic amber is synonymous with the chemical the transformation into amber is complete (Ross, 1998). name butanedioic acid (C4H6O4), more commonly known Amber that we find today was exuded millions of years ago as succinic acid, Beck, 1986. Although roughly 80% of all from the early Cretaceous Period (145-65 million years ago) amber samples are Baltic amber, there are other types of to the Miocene Period (23-5 million years ago) (Thickett, amber, not all of which contain succinic acid. It has been 1995) and from trees located in many regions around mo- theorized that succinic acid may not be contained in the dern-day Europe and the Dominican Republic. The trees in original amber material, and that it may be formed as different regions were distinct enough to have recogniza- a product of the aging process through a transition sta- ble characteristics in the resin they exuded, and thus have te byproduct, the abietic acid (C20H30O2) (Rottlander, chemical differences in their amber forms.
    [Show full text]