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Asian Institute of Gemological Sciences — professional gemology education for an international audience.

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Jewelry Trade Center (48th Floor), 919/539 Silom Road, Bangrak, Bangkok 10500, Thailand

Phone: +66 (0) 2267 4315

Mobile: +66 (0) 84 439 7577

Email: registrar@aigsthailand.com

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红蓝宝石+祖母绿分级、鉴定与商贸课程 – Ruby & Sapphire + Emerald Grading, Identification & Trading Course Bundle

Purchase once to unlock every course in this bundle.

Included courses

红、蓝宝石分级、鉴定与商贸课程 – Ruby & Sapphire Grading, Identification & TradingView →
祖母绿分级、鉴定与商贸课程 – Emerald Grading, Identification & TradingView →

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