Understanding Gemstones – Free Online Courses by SSEF
Start your journey to becoming a gem expert with these introductory online courses
Start your journey to becoming a gem expert with these introductory online courses
Swiss Gemmological Institute SSEF
SSEF is a non-profit Swiss foundation whose aim it is to further the science of gemstone testing and gemmological training. We are one of the leading gem labs in the world and have scientifically tested many of the world’s most prestigious gemstones.