About ICGL Members Membership Links Contact ICGL Newsletter Fall 2016: Rare stones 1 2 3 4 5 6 7 8 9 10 ICGL Newsletter Fall 2016 Posted on 2016/12/07 by ICGL New issue of ICGL newsletter is released on 7th December 2016. PDF version can be downloaded from next link. ICGLNewsLetter-2016 Fall(8.1Mb) The contents: Gemstones showing unusual colour changes Masaki Furuya Japan Germany Gemmological Laboratory, Kofu, Japan Two rare gems with similar appearance: Serendibite and Sappirine Miran Heo and Kook-Whee Kwak Wooshin Gemological Institute of Korea, Korea A report on the new ornamental gemstone from Pakistan: Sannan-Skarn Henry Hänni GemExpert, Basel, Switzerland Sphene from India Jayshree Panjikar and Aatish Panjikar PANGEMTECH- Panjikar Gem Research & Tech Institute No comments Posted in Uncategorized ICGL Newsletter Summer 2016 Posted on 2016/08/27 by ICGL New issue of ICGL newsletter is released on 27th August 2016. PDF version can be downloaded from next link. ICGLNewsLetter-2016 Summer(19.8Mb) The contents: Irradiation May Cause Synthetic Melee Diamonds to behave like natural diamonds Jayshree Panjikar and Aatish Panjikar PANGEMTECH- Panjikar Gem Research & Tech Institute, LAB NOTE: Fracture-filled diamonds An example from the daily work in gem-testing laboratory Elisabeth Strack Gemmologisches Institut Hamburg, Germany Nano-coated Pink Diamond A Study on Surface Analysis Technology and Coating Materials Seung Kwon Lee and Kook-Whee Kwak Wooshin Gemological Institute of Korea, Korea Coated Diamond to imitate Pink Diamond By Tay Thye Sun & Loke Hui Ying Far East Gemological Laboratory, Singapore No comments Posted in Newsletter, Lab Notes ICGL Newsletter Spring 2016 Posted on 2016/04/22 by ICGL New issue of ICGL newsletter is released on 22nd April 2016. PDF version can be downloaded from next link. ICGLNewsLetter-2016SP (4.8Mb) The contents: Blood Red Rubies from Madagascar Ridchard W. Hughes, Wimon Monorotkul & E. Billie Hughes Lotus Gemology Pigeon-Blood Type Red Rubies Jayshree Panjikar Pangem Tesing Labolatory Tialite (Al2TiO5) may cause Asterism Jayshree Panjikar and Aartish Panjikar Pangem Tech- Panjlkar Gem Research & Tech Institute No comments Posted in Newsletter, Lab Notes ICGL Newsletter Winter 2015 Posted on 2016/02/02 by ICGL New issue of ICGL newsletter is released on 30th January 2016. PDF version can be downloaded from next link. ICGLNewsLetter-2015WN(10.5Mb) The contents: Testing and screening of melee-sized nearcolorless HPHT synthetic diamonds using a multi-spectral induced luminescence imaging system (GV5000) in China Taijin Lu, Yan Lan, Rong Liang, Congshen Zhang National Gemstone Testing Center (NGTC) Identification of Dye-treated Golden South Sea Pearls Kook-Whee Kwak, Jong-Kyu Lee, and Eun-Ah Jeong Wooshin Gemological Institute of Korea Treated blue diamond Tay Thye Sun & Loke Hui Ying Far East Gem Lab, Singapore Symposium on Diamond: “Advances in Technology & Detection” Introducing ICGL Member from Australia: Mr Bill Sechos No comments Posted in Newsletter ICGL Newsletter Fall 2015 Posted on 2015/10/30 by ICGL New issue of ICGL newsletter is released on 30th October 2015. PDF version can be downloaded from next link. ICGLNewsLetter-2015FA (23Mb) The contents: HPHT Grown Near-Octahedral Shape Synthetic Small Diamond using Even Temperature Method By Joe C.C. Yuan Taiwan Gemmological Institute, Taipei, Taiwan Treated amber beads By Tay Thye Sun & Loke Hui Ying Far East Gemological Laboratory, Singapore Amber collection By Jayshree Panjikar Pangem Testing Laboratory, Pune, India AG&J Trade Alert: Proposed Solution to Detecting Fraudulent Replicas of Certified Diamonds By Dusan Simic Analytical Gemology and Jewelry, New York, USA No comments Posted in Newsletter ICGL Newsletter Summer 2015 Posted on 2015/06/13 by ICGL New issue of ICGL newsletter is released on 10th June 2015. PDF version can be downloaded from next link. ICGLNewsLetter-2015SU (8.6Mb) The contents: Tourmaline from Afghanistan By Jayshree Panjikar Pangem Testing Laboratory, Pune, India Introducing Regular Member 008 Mr. Walter Leite Realgems LAB No comments Posted in Newsletter ICGL Newsletter Spring 2015 Posted on 2015/03/10 by ICGL New issue of ICGL newsletter is released on 10th March 2015. PDF version can be downloaded from next link. ICGLNewsLetter-2015SP (19.9Mb) The contents: New type of emerald composite By Jayshree Panjikar Pangem Testing Laboratory, Pune, India Unusual hydrothermal synthetic emerald with filled fractures By Hyunmin Choi, Sunki Kim and Young-chool Kim Hanmi Gemological Institute & Laboratory (GIG), Seoul, Korea Soude-emeralds -Good imitations in modern times- By TayThye Sun and Loke Hui Ying Far East Gemological Laboratory, Singapore Impregnated Russian hydrothermal synthetic emerald By Kook-Whee Kwak and Eun-Ah Jeong Wooshin Gemological Institute of Korea, Seoul, Korea Introducing Regular Member 007 Mr. Travis Lejman Gemological Appraisal Laboratory of America, Inc. Members of ICGL met at Chiang Mai, Thailand on 7th December 2014 No comments Posted in Newsletter ICGL Newsletter Fall 2014 Posted on 2014/12/19 by ICGL New issue of ICGL newsletter is released on 21st November 2014. PDF version can be downloaded from next link. ICGLNewsLetter-2014FA (15.4Mb) The contents: Appearance of new treatment method on sapphire using HPHT apparatus By Hyun-min Choi, Sun-ki Kim and Young-chool Kim Hanmi Gemological Institute & Laboratory (GIG), Seoul, Korea “BLUE SILK” Color change-like effect in pink sapphire from Batakundi By Masaki Furuya Japan Germany Gemmological laboratory, Kofu, Japan Cobalt-doped glass-filled treated blue sapphire By TayThye Sun and Loke Hui Ying Far East Gemological Laboratory, Singapore Punsiri type heat treatment of sapphire done in Khambat, India By Jayshree Panjikar Pangem Testing Laboratory, Pune, India Current Trends within the Thai Gemstone Industry Dietmar Schwarz and Yadhunath Ramakrishnan Asian Institute of Gemological Sciences Thailand Interview with Dominic Moc: Founding Member No comments Posted in Newsletter ICGL Newsletter Summer 2014 Posted on 2014/08/23 by ICGL New issue of ICGL newsletter is released on 23rd August 2014. PDF version can be downloaded from next link. ICGLNewsLetter-2014SU (1.05Mb) The contents; Identification of CVD Synthetic Diamonds By Kook-WheeKwak, Wooshin Gemological Institute of Korea (WGK) Recent CVD diamonds tested at Pangem Testing Laboratory By Jayshree Panjikar, Pangem Testing Laboratory, Pune, India Treated Black Diamond Earring By Tay Thye Sun & Loke Hui Ying, Far East Gemological Laboratory, Singapore A book review “Colour of Paradise” by Kris Lane, 2010 By Elisabeth Strack, Gemmologisches Institut Hamburg, Germany Lab notes: 10 carats Asteriated Diamond and etc. Interview with Masaki Furuya: Founding Member No comments Posted in Newsletter ICGL Newsletter Spring 2014 Posted on 2014/07/02 by ICGL New issue of ICGL newsletter is released on 1st July 2014. PDF version can be downloaded from next link. ICGLNewsLetter-2014SP (1.05Mb) The contents; Oiling of Star Rubies from Burma By Tay Thye Sun & Loke Hui Ying, Far East Gemological Laboratory, Singapore Ancient Roman Bead-Makers of Arikamedu, South India By Jayshree Panjikar, Pangem Testing Laboratory, Pune, India Routine Findings in the Gemmological Laboratory Black Synthetic Moissanite Sold as Black Diamond By Elisabeth Strack, Gemmologisches Institut Hamburg, Germany A book review “Colour of Paradise” by Kris Lane, 2010 By Elisabeth Strack, Gemmologisches Institut Hamburg, Germany Innovative Idea of Teaching Gemmology By Sunki Kim, Hanmi Laboratory, Korea Interview with Elisabeth Strack: Founding Member No comments Posted in Newsletter, Lab Notes, Voice from members « Older Entries Categories Announcements Newsletter Lab Notes Voice from members Uncategorized Lab Reports Recent Posts ICGL Newsletter Fall 2016 ICGL Newsletter Summer 2016 ICGL Newsletter Spring 2016 ICGL Newsletter Winter 2015 ICGL Newsletter Fall 2015 Archives December 2016 August 2016 April 2016 February 2016 October 2015 June 2015 March 2015 December 2014 August 2014 July 2014 March 2014 November 2013 August 2013 June 2013 May 2013 February 2013 December 2012 Tags AIGS Gem Laboratory Bangkok Lab Place your Footer Content here Wordpress Theme by ThemeZee