Gemmological Association of All Japan ‒ZENHOKYO(GAAJ-ZENHOKYO)—A pioneer in the field of gemmology in Japan.
GAAJ-ZENHOKYO’s gemmological analysis capabilities, based on the latest and most sophisticated analytical devices has earned the respect, trust and confidence of its clients and has gained international reputation as an authoritative gemmological laboratory.
GAAJ-ZENHOKYO is today a world leader in Gemmological Research. The Research Laboratory is equipped with the most professional and advanced testing devices and systems to help analyze and expand the science of gemmological knowledge. The Laboratory’s latest research and achievements are publicized through professional media and academic conferences.
GAAJ-ZENHOKYO is Japan’s leading gemmological educational institution and has been providing professional education in this field for the past 30 years. The main aim being to provide the Jewellery industry with professional graduates, for example, the internationally recognized “CGJ” gemmological qualification, granted only by GAAJ-ZENHOKYO in Japan.
GAAJ-ZENHOKYO aims to remain Japans’ most trusted name in gemmological services, now and in the future.
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