03/12/2023
Swiss Gemmological Institute SSEF https://www.ssef.ch/
Since its beginnings over 50 years ago, the Swiss Gemmological Institute SSEF in Basel, Switzerland has been a driving force and at the forefront of scientific innovation in gemmology. Its dedication to gemstone scientific research is an important foundation to their expertise and reliability in testing.
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.