GCI Gemological Centers is an international network of Gemological Laboratories with branches in Israel, Thailand, Japan, India, and Russia. All affiliates are equipped with the most advanced and sophisticated gemological devices, in order to provide the diamond, precious stones, and jewelry industry services of the best scientific quality. GCI Gemological Centers operate under the rigid standards and regulations of AGL, GIA, and WFDB. It is ISO 9001 registered company (International Standards Organization) GCI Gemology College offers professional courses, taught by highly trained instructors, in a classroom equipped with the latest gemology equipment. Successfully passing the Diamond Grading Course grants the student a worldwide accredited D.G. diploma (Diamond Grader). Successfully passing all three courses grants the student a worldwide accredited G.G. diploma (Graduate Gemologist).