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The Journal of Gemmology Editor: Dr R.R
he Journa TGemmolog Volume 25 No. 8 October 1997 The Gemmological Association and Gem Testing Laboratory of Great Britain Gemmological Association and Gem Testing Laboratory of Great Britain 27 Greville Street, London Eel N SSU Tel: 0171 404 1134 Fax: 0171 404 8843 e-mail: [email protected] Website: www.gagtl.ac.uklgagtl President: Professor R.A. Howie Vice-Presidents: LM. Bruton, Af'. ram, D.C. Kent, R.K. Mitchell Honorary Fellows: R.A. Howie, R.T. Liddicoat Inr, K. Nassau Honorary Life Members: D.). Callaghan, LA. lobbins, H. Tillander Council of Management: C.R. Cavey, T.]. Davidson, N.W. Decks, R.R. Harding, I. Thomson, V.P. Watson Members' Council: Aj. Allnutt, P. Dwyer-Hickey, R. fuller, l. Greatwood. B. jackson, J. Kessler, j. Monnickendam, L. Music, l.B. Nelson, P.G. Read, R. Shepherd, C.H. VVinter Branch Chairmen: Midlands - C.M. Green, North West - I. Knight, Scottish - B. jackson Examiners: A.j. Allnutt, M.Sc., Ph.D., leA, S.M. Anderson, B.Se. (Hons), I-CA, L. Bartlett, 13.Se, .'vI.phil., I-G/\' DCi\, E.M. Bruton, FGA, DC/\, c.~. Cavey, FGA, S. Coelho, B.Se, I-G,\' DGt\, Prof. A.T. Collins, B.Sc, Ph.D, A.G. Good, FGA, f1GA, Cj.E. Halt B.Sc. (Hons), FGr\, G.M. Howe, FG,'\, oo-, G.H. jones, B.Se, PhD., FCA, M. Newton, B.Se, D.PhiL, H.L. Plumb, B.Sc., ICA, DCA, R.D. Ross, B.5e, I-GA, DGA, P..A.. Sadler, 13.5c., IGA, DCA, E. Stern, I'GA, DC/\, Prof. I. -
June 2008 'Tairus' Created Gems: “Part I - Beryl”
Sponsored by Ministry of Commerce & Industry Volume 51 Lab Information Circular June 2008 'Tairus' Created Gems: “Part I - Beryl” In the Volume 49 of Lab Information Circular, November 2007, PleochroismPleochroism: : Dichroism varied from weak in aquamarine to we reported “Synthetic Beryl of Paraiba colour” produced by very strong in darker coloured varieties like purple pink or Tairus Co. Ltd. in order to take the advantage of the popularity of orange red (see figure 2). 'Paraiba' tourmalines. Thereafter, we procured sets of various coloured beryls and corundum from the same manufacturer for our research and reference purpose. The study of these sets has been divided into two parts; this issue describes the study of beryl set, while the study of corundum set will be published in the next issue. 2.a 2.c 2.e The Beryl set consisted of five colour varieties (figure 1), namely, green (emerald), light blue (aquamarine), electric greenish blue (paraiba type), purple pink and orange red. All specimens were facetted as square step and measured 6 X 6 mm. 2.b 2.d 2.f Figure 2 Pleochroic colours of Tairus created Beryls Absorption Spectrum:Spectrum : The spectrum varied as per the colour variety; emerald showed a typical chromium spectrum while 'paraiba' colour displayed a strong band at around 430 nm. Purple pink and orange red varieties exhibited strong bands at 460 to 490 and 550 to 600 nm. UV fluorescence:fluorescence : All samples were inert to long wave as well as short wave UV light. Figure 1 Chelsea Filter Reactioneaction: : Emerald revealed a red glow while all Standard gemmological tests and advanced analysis on FTIR other varieties were either inert or did not displayed any reaction. -
SYNTHETIC GEM MATERIALS in the 2000S GEMS & GEMOLOGY WINTER 2010 Figure 1
SYNTHETIC GEM MATERIALS INTHE2000S: A DECADE IN REVIEW Nathan Renfro, John I. Koivula, Wuyi Wang, and Gary Roskin The first decade of the 2000s brought a constant flow of previously known synthetics into the marketplace, but little in the way of new technology. The biggest development was the commer- cial introduction of faceted single-crystal gem-quality CVD synthetic diamonds. A few other inter- esting and noteworthy synthetics, such as Malossi hydrothermal synthetic emeralds and Mexifire synthetic opals, also entered the market. Identification of synthetic gem materials continued to be an important function of—and, in some cases, challenge for—gemologists worldwide. he development of synthetics and the method- lished literature that the most significant develop- ologies used to detect new and existing materi- ments—and the focus of most research—during this Tals is of great importance to the international decade involved the production of gem-quality syn- gem community. Indeed, whether a synthetic gem thetic diamonds, primarily those grown by the com- was grown in the 2000s or the 1880s, today’s gemol- paratively new CVD (chemical vapor deposition) ogists must still be prepared to deal with it. Many process. Who can forget the September 2003 cover of synthetic gems were prominent in the marketplace Wired magazine, with a diamond-pavéd “supermod- in the first decade of the 2000s (see, e.g., figure 1). el” next to the headlines “$5 a carat. Flawless. Made The decade also saw some new synthetics. Among in a lab.”? This article proclaimed that “The dia- the synthetic colored stones introduced was the mond wars have begun,” and touted the potential for Malossi hydrothermal synthetic emerald (Adamo et outright cheap but extremely high-quality colorless al., 2005), which was gemologically similar to both and fancy-colored synthetic diamonds grown by two Russian synthetic emeralds and those manufactured very different processes (CVD and HPHT). -
Prismnlwinter2009.Pdf
PRISM Winter 2009 AGTA SPECTRUM AWARDS™ A MODEL PHOTOGRAPHER THE WOMAN BEHIND THE TROPHIES MEMBER PROFILE: MARK SCHNEIDER JEWELFOLIO™ A NEW DIRECTION IN GEMOLOGY The AGTA GTC JewelFolio™ is a custom built one-of-a-kind document for a one-of-a-kind jewel. Each JewelFolio™ is an individually numbered hardcover cloth or leatherbound volume that accompanies an individual gemstone. Every JewelFolio™ consists of 32 – 42 full color pages blending modern science with art and history. Available for: Kashmir Sapphire Colombian Emerald Sri Lankan Sapphire Burmese Sapphire Burmese Ruby Tanzanite ADD VALUE TO YOUR GEMSTONES WITH JEWELFOLIO™ 212-752-1717 www.agta-gtc.org [email protected] PRISMIWINTER 2009 Letter From the President When I became President of the AGTA our Members’ businesses survive and im- in the fall of 2007, we all knew that there prove, and to grow our organization both was a management crisis in our Associa- in numbers and in worldwide recognition. tion. In the past 1.5 years, the staff and BJ and I have worked closely together dur- Board have sailed to a smooth recovery. ing this past year to guarantee a smooth Here are the highlights: transition of leadership and continuance of 1. The Dallas office is producing more the objectives established by the Board of Member Benefits and more gemstone Directors. BJ has shown a total commit- promotions than ever before. ment to our Members and the AGTA, and 2. Spectrum was a huge success and I am sure he will be an outstanding Presi- received more internet and publication dent for your Association. -
INTERNATIONAL GEMMOLOGICAL CONFERENCE Nantes - France INTERNATIONAL GEMMOLOGICAL August 2019 CONFERENCE Nantes - France August 2019
IGC 2019 - Nantes IGC 2019 INTERNATIONAL GEMMOLOGICAL CONFERENCE Nantes - France INTERNATIONAL GEMMOLOGICAL August 2019 CONFERENCE Nantes - France www.igc-gemmology.org August 2019 36th IGC 2019 – Nantes, France Introduction 36th International Gemmological Conference IGC August 2019 Nantes, France Dear colleagues of IGC, It is our great pleasure and pride to welcome you to the 36th International Gemmological Conference in Nantes, France. Nantes has progressively gained a reputation in the science of gemmology since Prof. Bernard Lasnier created the Diplôme d’Université de Gemmologie (DUG) in the early 1980s. Several DUGs or PhDs have since made a name for themselves in international gemmology. In addition, the town of Nantes has been on several occasions recognized as a very attractive, green town, with a high quality of life. This regional capital is also an important hub for the industry (e.g. agriculture, aeronautics), education and high-tech. It has only recently developed tourism even if has much to offer, with its historical downtown, the beginning of the Loire river estuary, and the ocean close by. The organizers of 36th International Gemmological Conference wish you a pleasant and rewarding conference Dr. Emmanuel Fritsch, Dr. Nathalie Barreau, Féodor Blumentritt MsC. The organizers of the 36th International Gemmological Conference in Nantes, France From left to right Dr. Emmanuel Fritsch, Dr. Nathalie Barreau, Féodor Blumentritt MsC. 3 36th IGC 2019 – Nantes, France Introduction Organization of the 36th International Gemmological Conference Organizing Committee Dr. Emmanuel Fritsch (University of Nantes) Dr. Nathalie Barreau (IMN-CNRS) Feodor Blumentritt Dr. Jayshree Panjikar (IGC Executive Secretary) IGC Executive Committee Excursions Sophie Joubert, Richou, Cholet Hervé Renoux, Richou, Cholet Guest Programme Sophie Joubert, Richou, Cholet Homepage Dr. -
AGTA Gemfair Tucson
SPRING 2005 AGTA GemFair Tucson RECORD ATTENDANCE MAKES FOR PREMIER EVENT AGTA GemFair Las Vegas SPECIAL SHOW DATES AND HIGHLIGHTS JUNE 2-6, 2005 Oscars 2005: The 77th Annual Academy Awards 2005 AGTA Competition Winners CUTTING EDGE AWARDS SPECTRUM AWARDS PRISM|SPRING 2005 From the Executive Director There is no doubt that as an website, designed to excite and educate practices that also organization, AGTA’s kick-off event the consumer about colored gemstones make our clients each year is the Tucson GemFair. For and cultured pearls, is visually exciting respond. Especially many of us, the success of this show and focuses on helping the consumer today, as new and DOUGLAS K. HUCKER, AGTA EXECUTIVE DIRECTOR can be a clear indication of how the better appreciate the exciting world of increasingly remainder of the year will progress. gems and make good decisions when sophisticated gemstone treatments are One primary goal of our staff is to they are planning to acquire them. It being introduced, it is vital for us to ensure that the GemFair is well has also developed into an excellent reaffirm our commitment. We also attended. Certainly our efforts were tool for a retail or wholesale business to realize that the ultimate recipient of this rewarded as buyers flocked to Tucson train their entry-level people and give disclosure must be the consumer. in record numbers, resulting in our their more experienced staff a refresher AGTA has just released an updated and second-best attendance record in course on gemstones. We have had a improved version of the “Gemstone history. -
Texas Jewelers SPRING 08.Indd
the publication of the J TEXASeweTexas Jewelers Association lSpringer 2008 HOT STUFF! What Tucson Had to Feature This Year THE GOLD Survival Guide Answers for De Beers’ SETTLEMENT QUESTIONS PRSRT STD U.S. Postage 2008 TJA PAID ANNUAL CONFERENCE Permit #372 Austin, TX September 13-14, 2008 San Antonio INSIDE Spring 2008 EXECUTIVE BOARD President T H I S I S S U E Doug Jackson Jewel Mart - D Jackson Co. Paris, TX 903-785-7100 [email protected] FEATURES HOT STUFF! . 6 President Elect Mark Priest By Diana Jarrett—Find out what was HOT in Tucson this spring, which featured Legend Jewelers weeks of frenetic trading at the world’s largest gem bazaar. San Angelo, TX 325-653-0112 [email protected] THE GOLD SURVIVAL GUIDE . 10 By Julie Tereshchuk—As gold sky-rockets, how can savvy jewelers keep their Vice President feet on the ground? Eric Wright Village Goldsmith Jewelers Dallas, TX JEWELERS OF AMERICA HELPS MEMBERS ANSWER CONSUMER 972-934-0449 AND MEDIA QUESTIONS ON DE BEERS SETTLEMENT . 16 [email protected] Secretary/Treasurer THE 4 CS OF COACHING SKILLS . 17 Robert Harrison By Nancy Friedman—How Concurrence, Content, Commitment and Harrison Jewelers Austin, Texas 78731 Congratulations can change your business. 512-345-9396 [email protected] THE GREAT ESCAPE . 18 Past President By Thomas E. Houck—Developing an Exit Strategy Peter LeCody Fast-Fix Jewelry Repair Dallas, TX THE 4 THINGS EVERY STAFF MEMBER CAN DO TO INCREASE 214-361-2811 SALES AND PROFITS . 22 fastfix@fastfix.com By Bob Janet—Contact with every customer every time must be a great customer experience. -
IR and UV-Vis Spectroscopy of Gem Emeralds, a Tool to Differentiate Natural, Synthetic And/Or Treated Stones?
FACULTEIT WETENSCHAPPEN Vakgroep Geologie en Bodemkunde IR and UV-Vis spectroscopy of gem emeralds, a tool to differentiate natural, synthetic and/or treated stones? Mathieu Van Meerbeeck Academiejaar 2009–2010 Scriptie voorgelegd tot het behalen van de graad van Master in de Geologie Promotor: Prof. Dr. K. De Corte Co-promotor: Prof. Dr. P. Van den haute Leescommissie: Prof. Dr. P. De Paepe, Prof. Dr. P. Vandenabeele PREFACE AND ACKNOWLEDGEMENTS I’d like to thank my promotor Prof. Dr. Katrien De Corte and HRD Antwerp for giving me the opportunity to perform this unique investigation. Her support, enthusiasm, patience and criticism during the progress of this research have really inspired me. I’m also thankful for the scientific, technical and gem-related assistance of her colleagues, Jef Van Royen and Anita Colders. Nathalie Crepin also gets some of the credit, by providing me with important articles. It has also been nice working with the research staff in Lier, with special attention to the head of research, Mr. Yves Kerremans, and lab assistant Wendy Lembrechts, who initiated me with the instrumentation. The recognised experience of professor Peter Van den Haute, my co-promotor, truly helped me create a fully scientifically based work. My appreciation goes to Prof. Dr. P. De Paepe and Prof. Dr. P. Vandenabeele as well, who put time and effort in the critical analysis of this thesis. I also show my gratitude to my colleague student and friend Tim Verstraeten, who performed a similar study on sapphires. He was a great co-worker during data acquirement and our discussions lead me to several new insights. -
Winter 2007 Gems & Gemology
G EMS & G VOLUME XLIII WINTER 2007 EMOLOGY CVD Synthetic Diamonds Canary Tourmaline W Fluorescence Spectroscopy INTER Napoleon Necklace 2007 P AGES 291–408 V OLUME 43 N O. 4 THE QUARTERLY JOURNAL OF THE GEMOLOGICAL INSTITUTE OF AMERICA ® Winter 2007 VOLUME 43, NO. 4 291 LETTERS ________ FEATURE ARTICLES _____________ 294 Latest-Generation CVD-Grown Synthetic Diamonds from Apollo Diamond Inc. Wuyi Wang, Matthew S. Hall, Kyaw Soe Moe, Joshua Tower, and Thomas M. Moses Presents the gemological and spectroscopic properties of Apollo’s latest products, which show significant improvements in size, color, and clarity. 314 Yellow Mn-rich Tourmaline from the Canary Mining Area, Zambia pg. 295 Carat Points Brendan M. Laurs, William B. Simmons, George R. Rossman, Eric A. Fritz, John I. Koivula, Björn Anckar, and Alexander U. Falster Explores the vivid “canary” yellow elbaite from the Lundazi District of eastern Zambia, the most important source of this tourmaline. 332 Fluorescence Spectra of Colored Diamonds Using a Rapid, Mobile Spectrometer Sally Eaton-Magaña, Jeffrey E. Post, Peter J. Heaney, Roy A. Walters, Christopher M. Breeding, and James E. Butler Reports on the use of fluorescence spectroscopy to characterize colored diamonds from the Aurora Butterfly and other collections. NOTES AND NEW TECHNIQUES ________ 352 An Examination of the Napoleon Diamond Necklace Eloïse Gaillou and Jeffrey E. Post pg. 329 Provides a history and gemological characterization of this historic necklace. REGULAR FEATURES _____________________ 358 Lab Notes Apatite in spessartine • Atypical photoluminescence feature in a type IIa diamond • Diamond with “holiday” inclusions • Diamond with large etch channels containing iron sulfides • Black diamond with an oriented etch channel • The pareidolia of diamonds • Notable emerald carving • Gold coated onyx • Double-star sapphire • Imitation turquoise 366 Gem News International Record auction prices for diamonds • Namibian diamond mining pg. -
Lab Information Circular Coated Tanzanite
Sponsored by Ministry of Commerce & Industry Volume 53 Lab Information Circular January 2009 Coated Tanzanite – now in India The organizing committee of the Jaipur Jewellery Show Pleochroism (2008) selected Tanzanite as the theme of the show and The coating is being applied on pale coloured stones and the same will be promoted during the upcoming year too. not on purely colourless and as a result some sort of The basic idea behind this is to make this popular gem pleochroism will still be seen in these stones, hence more popular and trendy amongst the consumers. But along with enjoying the charm of this incredible gem, one pleochroism does not help in detection of these coated has to be cautious as well, since 'Coated' Tanzanite has hit stones. the Indian market. Magnification Features It was May 2008 when coating on tanzanite was first The most important part of identifying a coated stone is to reported by the American Gem Trade Association Gem observe the surface features which include chipped off Testing Center (AGTA-GTC) and American Gemological areas especially along the facet edges and the Laboratories (AGL). After this report, Shane F. McClure unevenness of coated substance. Here, in case of coated and Andy H. Shen of the Gemological Institute of America tanzanite it was quite difficult to observe these features at (GIA) also released an article on coated tanzanite in the lower magnification (with 10x loupe). However, at higher Gems & Gemology, Summer 2008. Until October 2008 we did not receive any such material for identification at magnification with proper illuminations and careful the Gem Testing Laboratory, Jaipur but now these coated observations one can make out these features. -
New FTC Recruitment, Consultants, Creative Assets to Support Marketing, Social Media, and Landing Pages. What
The Official Magazine of The Independent Jeweler • Volume 9, Issue 7 • October 2018 Actor Garcelle Beauvais AGTA 2018 Spectrum Award Winners Page 32-33 Izi Creations Variety Gem Bellarri Page 35 Page 35 Page 34 TABLE OF CONTENTS OCTOBER 2018 32 8 Is It Time to Update Your Store? By Frank Dallahan 10 The Challenge of Recruitment – How to Get the Best for Your Business By David Brown 14 Help, I’ve Fallen And I Can’t Get Up! By Susan Arlin 16 “Generating Creative Assets to Support In-Store Promotions By Anne Drummond 20 A Data Breach Can Cost Your Business — 42 What You Need to Know By David Sexton 24 The Secret to Great Marketing By Aleah Arundale 26 Effective Social Media Marketing By Rick Arnemann 30 The Importance of Landing Pages By Matthew Perosi 32 AGTA Spectrum Awards 36 The Style Page 38 Why Hire an Outside Consultant? By Bill Boyajian 34 42 The Ultimate To Do List to Bring Customers To Your Store By Gloria Maccaroni 46 New and Noteworthy 54 Advertiser’s Index COVER COURTESY OF AGTA Garcelle Beauvais, Actor Necklace: Zoltan David, Somewhere In The Rainbow - 24K yellow gold, palladium, purple steel and 18K yellow gold “Star Flower” necklace featuring a 28.14 ct. Tourmaline accented with gray Sapphires and color-change Garnets. Earrings: Naomi Sarna, Naomi Sarna Designs - 18K and 24K yellow and 18K white gold maple leaf earrings featuring multicolored Diamonds, Sapphires and Garnets. Bracelet: Jorge Paumanys Nunez, Jae’s Jewelers - 14K yellow gold bracelet featuring smoky Quartz and mixed-cut Citrines accented with Diamonds. -
Proceedings of the Gemmological Association of Great Britain and Notices
The Journal of Gemmology2011 / Volume 32 / Nos. 5/8 Trapiche tourmaline The Gemmological Association of Great Britain The Journal of Gemmology / 2011 / Volume 32 / No. 5–8 The Gemmological Association of Great Britain 27 Greville Street, London EC1N 8TN, UK T: +44 (0)20 7404 3334 F: +44 (0)20 7404 8843 E: [email protected] W: www.gem-a.com Registered Charity No. 1109555 Registered office: Palladium House, 1–4 Argyll Street, London W1F 7LD President: Prof. A. H. Rankin Vice-Presidents: N. W. Deeks, R. A. Howie, E. A. Jobbins, M. J. O'Donoghue Honorary Fellows: R. A. Howie Honorary Life Members: H. Bank, D. J. Callaghan, T. M. J. Davidson, J. S. Harris, J. A. W. Hodgkinson, E. A. Jobbins, J. I. Koivula, M. J. O’Donoghue, C. M. Ou Yang, E. Stern, I. Thomson, V. P. Watson, C. H. Winter Chief Executive Officer: J. M. Ogden Council: J. Riley – Chairman, S. Collins, B. Jackson, S. Jordan, C. J. E. Oldershaw, L. Palmer, R. M. Slater Members’ Audit Committee: A. J. Allnutt, P. Dwyer-Hickey, E. Gleave, J. Greatwood, G. M. Green, K. Gregory, J. Kalischer Branch Chairmen: Midlands – P. Phillips, North East – M. Houghton, North West – J. Riley, South East – V. Wetten, South West – R. M. Slater The Journal of Gemmology Editor: Dr R. R. Harding Deputy Editor: E. A. Skalwold Assistant Editor: M. J. O’Donoghue Associate Editors: Dr A. J. Allnutt (Chislehurst), Dr C. E. S. Arps (Leiden), G. Bosshart (Horgen), Prof. A. T. Collins (London), J. Finlayson (Stoke on Trent), Dr J.