Colored gemstones are the general term for all gemstones with color in the gem family. Colored gemstones have the most gorgeous and beautiful colors described by nature, and people can't help but fall in love with them. In recent years, China's colored gemstone market has entered a period of rapid growth and development. A systematic understanding of the identification and grading evaluation of colored gemstones is more conducive to judging the value of gemstones and grasping the development trend of colored gemstones.

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Systematic content including the history, origin, treatment, quality evaluation and market analysis of ruby, emerald, sapphire and spinel.

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RMB 899