(Colored Gemstone Identification and Evaluation Course + Ruby and Sapphire Identification and Evaluation Course + Emerald Identification and Evaluation Course)

①The single-variety corundum family course teaching, comprehensively analyzes the corundum family, focuses on the treatment of ruby and sapphire, and deeply understands whether ruby and sapphire are heated or not.

②The course focuses on the core factors of ruby and sapphire value, the risk of synthetic ruby and sapphire transactions in market, the identification and avoidance of various traditional and modern treated gemstones.

③The course combines in-depth interpretation from the mining area with the frontier market information of the laboratory, enables students to use these knowledge.

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·Comprehensive: covering the three precious gemstones of ruby, sapphire and emerald and eight varieties of popular colored gemstones in the market.

·Professionalism: Professional lecturers, connecting with the market and relying on the GUILD laboratory, bringing the latest information from the market to the course.

·Discount: 30% off for 3 core courses

Online-teaching, you can choose to have your courses any places at your convenience

Graduate Colored Gemstones Gemologist (GCG)

contact GUILD WeChat service account

Colored Gemstone Gemologist Online Theory Combination Course (Colored Gemstone Course + Emerald Course + Ruby and Sapphire Course)  RMB 11520