承翰寶石 | Gemologist & Jewellery invitation: Gem stone color verse value
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Gemologist & Jewellery invitation: Gem stone color verse value

The article on the value of different color in gem stones was published in Gemologist & Jewellery comparison.
With 40 years experience on screening and authenticating gem,
Michael Miao bring us the first article discuss the relation of value and color in Chinese.