Welcome to GGTL Laboratories
GGTL Laboratories is dedicated to scientific research in order to serve the trade and our clients with the highest level of expertise in testing of diamonds, colored stones and pearls.
The efforts invested to achieve this research are represented by the list of our conferences and our gemological publications in trade and science journals, as shown underneath.
Category A – peer reviewed journals:
Hainschwang T. , Fritsch E., Notari F., Rondeau B., Katrusha A. (2013) The origin of color in natural C center bearing diamonds. Diamond and Related Materials, Vol. 39, pp 27-40.