Volume 36 / No. 3 / 2018 Bumble Bee Stone from Indonesia Tracking and Traceability in the Gem Industry Circling on Ming Cultured Pearls Volume 36 / No. 3 / 2018 Volume 36 / No. 3 / 2018 Cover photo: Bumble Bee Stone from Indonesia is an unusual carbonate- rich rock that is coloured by arsenic sulphide minerals and may also contain COLUMNS black areas of ‘sooty’ pyrite. A pattern resembling an erupting volcano is Bumble Bee Stone seen in this cabochon (45 × 65 mm), and is reminiscent of the volcanic from Indonesia Tracking and Traceability What’s New 181 origin of this gem. Courtesy of Rare Earth Mining Company. in the Gem Industry Circling on Alrosa Diamond Inspector | Ming Cultured Pearls D-Tect | DiaColor Colorimeter | Torcia 365 Long-wave LED Flashlight | Amberif 2017 and 2018 Proceedings | EGU General ARTICLES Assembly 2018 Gem Abstracts | FTC’s ‘Jewelry Guides’ Revised | Blockchain, Chain of Custody and Trace Elements: 212 Governing the Gemstone Sector: An Overview of Tracking and Traceability Opportunities Lessons from Global Experience | in the Gem Industry GSJ 2018 Annual Meeting By Laurent E. Cartier, Saleem H. Ali and Michael S. Krzemnicki Abstracts | PGI Insight 2018 | Sapphires from Mogok, Bumble Bee Stone: A Bright Yellow-to-Orange and 228 Myanmar | Wooshin Gem Lab Black Patterned Gem from West Java, Indonesia Magazine | Yellow Diamonds Educational Video | Call for By Emmanuel Fritsch and Joel Ivey Papers: Gem Issue of The An Explanation of a Specific Type of Circling as Extractive Industries and Society 240 | Diamond Museum Opens in Observed on Ming Cultured Pearls Botswana By Jean-Pierre Gauthier, Jacques Fereire and Thanh Nhan Bui Gem Notes 186 Ametrine with Trapiche-like 208 230 Patterns from Brazil | Hessonite from Mogok, Myanmar | Yellowish Green to Yellow Opal from Brazil | Ethiopian Opal with Dendritic Inclusions | Large Phenakite from Madagascar | Poudretteite from Mogok, Myanmar | Pseudo- Photo by Orasa Weldon malachite from Slovakia | Quartz Slices from Madagascar with Interesting Inclusions | Red 213 Aventurescent Quartzite from Tanzania | Yellow Scapolite from Tanzania Showing Daylight Fluorescence | Cr-bearing Green Spodumene from Northern Nigeria | Titanite (Sphene) from Zimbabwe | Native Copper Inclusions in a Cu-bearing Tourmaline | Tourmaline Mining Photo by L. E. Cartier Photo by J. Ivey at Ijero, Nigeria | Reduced Phosphorescence of Synthetic Diamonds After Electron Beam Conferences 253 Irradiation | Ammonites Inlaid with Ammolite and Turquoise | AGA Las Vegas | 22nd Meeting of the International Unusual Matrix Opal Imitations | Mineralogical Association 55th Myanmar Gems Emporium Learning Opportunities 258 Gem-A Notices 268 Letters 211 Transparency of Emerald New Media 262 Literature of Interest 269 Tanzurine The Journal is published by Gem-A in collaboration with SSEF and with the support of AGL. ISSN: 1355-4565, http://dx.doi.org/10.15506/JoG.2018.36.3 THE JOURNAL OF GEMMOLOGY, 36(3), 2018 i EDITOR-IN-CHIEF EDITORIAL CO-ORDINATOR EDITORIAL Brendan M. Laurs Sarah Bremner ASSISTANT [email protected] [email protected] Carol M. Stockton EXECUTIVE EDITOR EDITOR EMERITUS Alan D. Hart Roger R. Harding ASSOCIATE EDITORS 21 Ely Place Ahmadjan Abduriyim, Tokyo, Japan; Raquel Alonso-Perez, Harvard University, Cambridge, Massa- London EC1N 6TD chusetts, USA; Edward Boehm, RareSource, Chattanooga, Tennessee, USA; Maggie Campbell Pedersen, UK Organic Gems, London; Alan T. Collins, King’s College London; John L. Emmett, Crystal Chemistry, Brush t: +44 (0)20 7404 3334 Prairie, Washington, USA; Emmanuel Fritsch, University of Nantes, France; Rui Galopim de Carvalho, Portugal Gemas, Lisbon, Portugal; Lee A. Groat, University of British Columbia, Vancouver, Canada; f: +44 (0)20 7404 8843 Thomas Hainschwang, GGTL Laboratories, Balzers, Liechtenstein; Henry A. Hänni, GemExpert, Basel, e: [email protected] Switzerland; Jeff W. Harris, University of Glasgow; Alan D. Hart, Gem-A, London; Ulrich Henn, German w: www.gem-a.com Gemmological Association, Idar-Oberstein; Jaroslav Hyršl, Prague, Czech Republic; Brian Jackson, National Museums Scotland, Edinburgh; Stefanos Karampelas, Bahrain Institute for Pearls & Gemstones (DANAT), Registered Charity No. 1109555 Manama; Lore Kiefert, Gübelin Gem Lab Ltd, Lucerne, Switzerland; Hiroshi Kitawaki, Central Gem Labora- A company limited by guarantee and tory, Tokyo, Japan; Michael S. Krzemnicki, Swiss Gemmological Institute SSEF, Basel; Shane F. McClure, registered in England No. 1945780 Gemological Institute of America, Carlsbad, California; Jack M. Ogden, Striptwist Ltd, London; Federico Registered office: Palladium House, Pezzotta, Natural History Museum of Milan, Italy; Jeffrey E. Post, Smithsonian Institution, Washington 1–4 Argyll Street, London W1F 7LD DC, USA; Andrew H. Rankin, Kingston University, Surrey; George R. Rossman, California Institute of Technology, Pasadena, USA; Karl Schmetzer, Petershausen, Germany; Dietmar Schwarz, Federated Inter- national GemLab, Bangkok, Thailand; Menahem Sevdermish, Gemewizard Ltd, Ramat Gan, Israel; Andy PRESIDENT H. Shen, China University of Geosciences, Wuhan; Guanghai Shi, China University of Geosciences, Beijing; Maggie Campbell Pedersen James E. Shigley, Gemological Institute of America, Carlsbad, California; Christopher P. Smith, American Gemological Laboratories Inc., New York, New York; Evelyne Stern, London; Elisabeth Strack, Gemmolo- gisches Institut Hamburg, Germany; Tay Thye Sun, Far East Gemological Laboratory, Singapore; Pornsawat VICE PRESIDENTS Wathanakul, Kasetsart University, Bangkok; Chris M. Welbourn, Reading, Berkshire; Bert Willems, Leica David J. Callaghan Microsystems, Wetzlar, Germany; Bear Williams, Stone Group Laboratories LLC, Jefferson City, Missouri, USA; Alan T. Collins J. C. (Hanco) Zwaan, National Museum of Natural History ‘Naturalis’, Leiden, The Netherlands. Noel W. Deeks E. Alan Jobbins CONTENT SUBMISSION Andrew H. Rankin The Editor-in-Chief is glad to consider original articles, news items, conference/excursion reports, announce- ments and calendar entries on subjects of gemmological interest for publication in The Journal of Gemmology. HONORARY FELLOWS A guide to the various sections and the preparation of manuscripts is given at www.gem-a.com/index.php/ Gaetano Cavalieri news-publications/publications/journal-of-gemmology/submissions, or contact the Editor-in-Chief. Andrew Cody Terrence S. Coldham SUBSCRIPTIONS Emmanuel Fritsch Gem-A members receive The Journal as part of their membership package, full details of which are given at www.gem-a.com/membership. Laboratories, libraries, museums and HONORARY similar institutions may become direct subscribers to The Journal. DIAMOND MEMBER ADVERTISING Martin Rapaport Enquiries about advertising in The Journal should be directed to [email protected]. For more information, see https://gem-a.com/index.php/news-publications/publications/ CHIEF EXECUTIVE OFFICER journal-of-gemmology/advertising. Alan D. Hart DATABASE COVERAGE COUNCIL The Journal of Gemmology is covered by the following abstracting and indexing services: Justine L. Carmody – Chair Australian Research Council academic journal list, British Library Document Supply Kathryn L. Bonanno Service, Chemical Abstracts (CA Plus), Copyright Clearance Center’s RightFind application, Paul F. Greer CrossRef, EBSCO (Academic Search International, Discovery Service and TOC Premier), Kerry H. Gregory Gale/Cengage Learning Academic OneFile, GeoRef, Index Copernicus ICI Journals Master Joanna Hardy List, Mineralogical Abstracts, Cambridge Scientific Abstracts (ProQuest), Scopus and the Nigel B. Israel Clarivate Analytics (formerly Thomson Reuters) Emerging Sources Citation Index (in the Web of Science). Jack M. Ogden Philip Sadler COPYRIGHT AND REPRINT PERMISSION Christopher P. Smith 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. BRANCH CHAIRMEN Midlands – Louise Ludlam-Snook Design & production by Zest Design, www.zest-uk.com North East – Mark W. Houghton South East – Veronica Wetten Printed by DG3 Group (Holdings) Ltd South West – Richard M. Slater Cert no. TT-COC-002454 © 2018 The Gemmological Association of Great Britain ISSN: 1355-4565 ii THE JOURNAL OF GEMMOLOGY, 36(3), 2018 What’s New INSTRUMENTATION Alrosa Diamond Inspector D-Tect for Released in March 2018, the Diamond Inspector Synthetic from Russian diamond mining company Alrosa was Diamonds developed jointly with the Technological Institute for In May 2018, Super Hard and Novel Carbon Materials in Moscow. The HRD Antwerp instrument is designed for separating polished loose or in Belgium mounted natural, treated and synthetic diamonds, as released its new well as simulants. Testing takes less than one minute per D-Tect instrument. sample and reportedly employs three analytical methods. It is designed to be the Near-colourless (D–K) samples that range from 0.03 to final step in the identification of synthetic diamonds, 10 ct may be tested; the analysis is performed on a round following screening by HRD’s M-Screen+ or any other flat area of the sample with a diameter of at least 1.5 mm. diamond screening device that refers samples for further The Diamond Inspector weighs 1.8 kg (plastic frame) or testing. D-Tect is a compact table-top instrument that 3.1 kg (metal