The TGJMA was founded in December 1976 and is today the most important gem trade association in Thailand, boasting over 1500 members. Lotus Gemology is proud to be a member of this important organization.
The TGJMA was founded in December 1976 and is today the most important gem trade association in Thailand, boasting over 1500 members. Lotus Gemology is proud to be a member of this important organization.