Session – Sciences Behind Gemstone Treatments


As high quality gemmy materials directly from natural sources depleting over the years, human desire on these materials still prospering from the emerging new markets such as China. Gem treatments, using heat or other techniques, are very common in many gem materials nowadays, such as HPHT treatment of diamonds and sapphires, radiation treatment on various gemstones and so on. These are truly applied mineralogy and material science in action. This session will gather active researchers in this field to discuss the state-of-the-art treatment techniques and communicating these ideals to researchers in other related fields.

Scope:
Scientific papers concerning methodology, results and detecting techniques of treatments of gem materials, including but not limited to: heat treatment, high-pressure-high-temperature treatment, radiation treatment, impregnation, ion implantation, microwave annealing, laser annealing, laser drilling, multilayer coating and so on. Any other gemstone related subjects are welcome.

 

Session convenor

Professor Andy Shen (China)

China University of Geosciences

 

About the session convenor

Professor Shen is the Hubei Provincial Distinguished Professor in the Gemmological Institute, China University of Geosciences (Wuhan) since 2013. He is also the Editor-in-Chief of the Chinese Journal of Gems and Gemmology, published by China University of Geosciences in Chinese and English. He was a Research Scientist at the Gemological Institute of America (GIA), an Associated Research Scientist at California Institute of Technology and a University Lecturer at Cambridge University, UK. He obtained his Ph.D. from Cornell University and did his postdoctoral work at the Bayerisches Geoinstitut at Bayreuth, Germany. Currently, his research is focused on applying physical and chemical principles in understanding various physical properties of gemstones and minerals. Current projects include optical properties of diamond, spinel and beryl; colour origin of gem-quality diaspore and various gemstones; nano-inclusions in sapphires and other gem materials, etc. His goal is to apply the findings from his research to promote the scientific aspect of gemology.

 

Co-convenors

  • Dr Pornsawat Wathanakul (Thailand), The Gem and Jewelry Institute of Thailand