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Gemological Institute Of America
强调
教育
Американский геммологический институт
(
grafleonov
)
英语 词库
Gemological Institute of America
珠宝
Established in 1931, GIA is the world's largest and most respected nonprofit institute of gemological research and learning. Conceived 75 years ago in the august tradition of Europe's most venerated institutes, GIA discovers
through GIA Research
, impar
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