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

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

ICGL second newsletter is released on 17th May 2013.

PDF version can be downloaded from next link.

ICGLNewsLetter-2013SP (6.7Mb)

The contents;

We connect… (Message from ICGL first president)

By Mr. Tay Thye Sun, President

New Members are welcome at ICGL

by Jayshree Panjikar, Membership Coordinator

A Rare Necklace with Maona Pearls

By Elisabeth Strack, Gemmologisches Institut Hamburg

Tucson 2013: A Reflection on Pearl Issues

By Elisabeth Strack, Gemmologisches Institut Hamburg

Spectroscopic Characteristics of “Merelani Mint” Grossular Garnet

By Masaki Furuya Japan Germany Gemmological Laboratory, Kofu, Japan

LAB NOTES:

Identification of Mysterious Large “Black Stone”

By Branko Deljanin, Canadian Gemological Laboratory
Bear Williams, Stone Group Labs