1. Results 1 - 8 of 8 for in the subject area " Gemmology ".

2. On the basis of systematic research, methods to identify dyed pearls and irradiated pearls in an ordinary gemmology lab are proposed in the paper.

3. Research on the origin and occurrence of gems and jades is one of the hottest topic in geology, gemmology and archaeology.

4. The theory about typomorphic characteristics of minerals would provide new theoretic bases and find new identify ways if it is applied to gemmology.

5. The application principles and methods are demonstrated of nuclear radiation technique in gemmology.

6. Based on the education of learning combined with production, the gemmology discipline has been founded and many achievements have been obtained in Tongji University.