The GUILD team visited the emerald mining area in Panjshir, Afghanistan.Ruby Liu was the first woman to go to the Panjshir mining area for a field gemmological investigation.

In May 2019, the GUILD (Bangkok) Gem Laboratory was officially established. Relying on the scientific research attitude, technical advantages and service system accumulated by GUILD over the years, the GUILD (Bangkok) Gem Laboratory has brought surprises to the Thai colored gemstone market within a short period of time.

The series of master courses of GUILD Gemological Institute were released, with the deep participation of world-renowned gemologists, industry leaders and industry association leaders, including the President of the International colored gems Association and the President of Gemfields.

Release of "GUILD Emerald Advanced Appraisal and Evaluation Course"

The release of "GUILD red sapphire identification and evaluation course"

GUILD Gemological Education initiated the Colombian field study tour course, and led the study tour team to go deep into Muzo, Chivor, Cunas and other important mining areas to inspect the supply chain in colored gems.