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If you have any cooperation or consultation, please feel free to contact us.
An introductory summary course tailored specifically for consumers, colored gemstone buyers and gem lovers, to systematically upgrade ruby knowledge.
Chapter One Introduction to Ruby
Chapter Two Ruby Origin
Chapter Three Ruby Market
Chapter Four Ruby Cut
Chapter Five Ruby Quality Evaluation
Chapter Six Star Ruby
Chapter Seven Ruby Treatment
Chapter Eight Ruby Synthetic and Imitation
Chapter Nine Report Interpretation
Online-teaching, you can choose to have your courses any places at your convenience
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RMB 299
GUILD looks forward to your suggestions.
If you have any cooperation or consultation, please feel free to contact us.