Laboratory-grown Diamonds Comparative Analysis of Portable Instruments for Screening and ID
Branko Deljanin, B.Sc., GG, FGA, DGA, DUG is President and Head Gemmologist at Canadian Gemological Laboratory, and Director of Gemmological Research Industries Inc. Vancouver (Canada). He is a research gemmologist with extensive experience in advanced testing of diamonds and gemstones and gemmology instructor in 17 countries on four continents.