EDUCATION
Differentiating Natural and Laboratory-Grown Diamonds
Webinar: Differentiating Natural and Laboratory-Grown Diamonds
Presented by Gemological Institute of America
Date: September 26, 2024
Time: 3:00 PM (EST)
Presenter: Ulrika D’Haenens-Johansson, Senior Manager of Diamond Research at GIA
Natural and laboratory-grown diamonds: What’s the difference?
Over the past few years, laboratory-grown diamonds produced by the high pressure high temperature (HPHT) and chemical vapor deposition (CVD) methods have become widely available in the gem trade, trading at a lower price point than natural diamonds. These gems have nearly the same chemical, optical and physical properties as natural diamonds, yet a vastly different growth history, providing clues for their separation. In this seminar we will discuss the differences between these two diamond products, including methods to screen and distinguish them.
Why you should attend this webinar:
– Laboratory-grown diamonds quality has improved to the extent that they may appear visually indistinguishable from natural diamonds
– Methods to screen and identify laboratory-grown diamonds will be discussed, providing the background to best protect your business and clients from unintentional mixing.
– Methods to screen and identify laboratory-grown diamonds will be discussed, providing the background to best protect your business and clients from unintentional mixing.
What you will learn:
– Find out about the way that natural and laboratory-grown diamonds are produced
– Learn how the differences between natural and laboratory-grown diamonds can be harnessed for their separation
– Identify challenging samples that would require advanced testing for conclusive identification
– Learn how the differences between natural and laboratory-grown diamonds can be harnessed for their separation
– Identify challenging samples that would require advanced testing for conclusive identification
About the Presenter
Dr. Ulrika F.S. D’Haenens-Johansson is the Senior Manager of Diamond Research at GIA. She joined the New York laboratory as a Research Scientist in 2011, following her Masters and PhD degrees in Physics at the University of Warwick, United Kingdom. Her area of research is the defect physics of natural, treated and laboratory-grown diamond materials using optical and EPR spectroscopy, with particular focus on developing methods to ensure that they can be identified and separated, maintaining transparency within the trade. She is currently also managing the chemical vapor deposition (CVD) lab at GIA, working towards creating reproducible growth procedures for the production of gem-quality diamonds. She has published peer-reviewed scientific articles in journals including Gems & Gemology, Reviews in Mineralogy and Geochemistry, Physical Review B, and Applied Optics.
