New issue of ICGL newsletter is released on 7th December 2016.
PDF version can be downloaded from next link.
Gemstones showing unusual colour changes
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
GemExpert, Basel, Switzerland
Sphene from India
Jayshree Panjikar and Aatish Panjikar
PANGEMTECH- Panjikar Gem Research & Tech Institute