Paul Johnson

Gemological Institute of America, New York, NY

Activity

2018

2016
  • TREATED HYDROGEN RICH DIAMONDS
    T254 Gemological Research in the Twenty-First Century: Characterization, Exploration, and Geological Significance of Diamonds and Other Gem Minerals (Posters)
    Tuesday, 27 September 2016
    9:00 AM - 6:30 PM
    Exhibit Hall E/F

2015