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Activity

2024

• LOW-TEMPERATURE ANNEALING AND KINETICS OF RADIATION STAINS IN NATURAL DIAMOND
  T164 Gem Minerals, Localities and Geological Significance
  Tuesday, 24 September 2024

  8:00 AM - 12:00 PM

  207A
• SPECTROSCOPIC FEATURES OF OUTER GREEN FLUORESCENCE RIMS IN PINK ARGYLE ROUGH DIAMONDS
  T164 Gem Minerals, Localities and Geological Significance
  Tuesday, 24 September 2024

  8:00 AM - 12:00 PM

  207A
• APPLICATIONS OF MACHINE LEARNING TO CHARACTERIZING COLOR-CAUSING DEFECTS IN NATURAL DIAMONDS
  T164 Gem Minerals, Localities and Geological Significance
  Tuesday, 24 September 2024

  8:00 AM - 12:00 PM

  207A

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2022

• CLASSIFICATION OF GEM MATERIALS USING MACHINE LEARNING
  T225 Gemological Research in the Twenty-First Century—Gem Minerals and Localities
  Wednesday, 12 October 2022

  8:00 AM - 12:00 PM

  503
• SPECTROSCOPIC RESPONSES OF DIAMOND DURING LOW-TEMPERATURE ANNEALING: ANALOGUE FOR RESIDENCE IN NATURAL SEDIMENTARY SYSTEMS
  T225 Gemological Research in the Twenty-First Century—Gem Minerals and Localities
  Wednesday, 12 October 2022

  8:00 AM - 12:00 PM

  503

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2021

• COMPARISON OF SPECTROSCOPIC FEATURES IN TYPE IIA AND IA NATURAL PINK DIAMONDS
  T190 Gemological Research in the 21st Century—Gem Minerals and Localities (Posters)
  Tuesday, 12 October 2021

  2:30 PM - 6:30 PM

  Exhibit Hall A
• EXAMINING THE DEFECTS IN NATURALLY IRRADIATED GREEN DIAMONDS: A STATISTICAL APPROACH TO SPECTROSCOPY
  T107 Gemological Research in the 21st Century—Gem Minerals and Localities
  Monday, 11 October 2021

  1:30 PM - 5:30 PM

  A107–A109

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2019

• NATURAL RADIATION STAINS IN DIAMONDS: RATES OF COLOR CHANGE
  T288 Gemological Research in the 21st Century—Gem Minerals and Localities
  Wednesday, 25 September 2019

  1:30 PM - 5:30 PM

  Room 132ABC, North Building
• ANALYSIS AND IDENTIFICATION OF INCLUSIONS IN TYPE IIA PINK DIAMONDS
  T269 Gemological Research in the 21st Century—Gem Minerals and Localities (Posters)
  Wednesday, 25 September 2019

  9:00 AM - 6:30 PM

  Hall AB, North Building

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2018

• PHOTOLUMINESCENCE FEATURES OF NATURAL PINK DIAMONDS
  T282 Gemological Research in the Twenty-First Century—Characterization, Exploration, and Geological Significance of Diamonds and Other Gem Minerals
  Wednesday, 7 November 2018

  1:30 PM - 5:30 PM

  Room 145

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2017

• STUDY OF SPATIAL CORRELATION OF POINT DEFECTS IN NATURAL DIAMOND WITH BROWN COLORATION
  T172 Gemological Research in the 21st Century—Characterization, Exploration, and Geological Significance of Diamonds and other Gem Minerals (Posters)
  Monday, 23 October 2017

  9:00 AM - 6:30 PM

  Halls 4EF
• SPATIAL MAPPING OF TEMPERATURE AND IRRADIATION EFFECTS IN NATURAL TYPE IIB DIAMOND
  T20 Gemological Research in the 21st Century—Characterization, Exploration, and Geological Significance of Diamonds and other Gem Minerals
  Sunday, 22 October 2017

  8:00 AM - 12:00 PM

  Skagit 3

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2016

• HIGH TEMPERATURE ANNEALING OF 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

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2015

• EFFECT OF LPHT TREATMENT ON NATURAL TYPE IA DIAMONDS
  T300 Gemological Research in the 21st Century: Exploration, Geology, and Characterization of Diamonds and other Gem Minerals (Posters)
  Wednesday, 4 November 2015

  9:00 AM - 6:30 PM

  Exhibit Hall
• TEMPERATURE EFFECTS ON RADIATION STAINS IN NATURAL DIAMONDS
  T16 Radiation Effects, Mineralogy, and Materials Science of Actinides I: In Honor of Rodney C. Ewing, 2015 Roebling Medalist
  Sunday, 1 November 2015

  8:00 AM - 12:00 PM

  Room 317

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2014

• SPATIAL CORRELATION OF INFRARED AND PL OPTICAL CENTERS IN HYDROGEN-RICH DIAMONDS
  T104 Gemological Research in the 21st Century: Exploration, Geology, and Characterization of Diamonds and Other Gem Minerals I
  Monday, 20 October 2014

  8:00 AM - 12:00 PM

  202/203

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2013

• SPATIAL DISTRIBUTION OF BORON AND PL OPTICAL CENTERS IN TYPE IIB DIAMOND
  T375 Gemological Research in the 21st Century: Characterizing Diamonds and other Gem Minerals (Posters)
  Wednesday, 30 October 2013

  9:00 AM - 6:30 PM

  Hall D
• COMPARISON OF LUMINESCENCE LIFETIMES FROM NATURAL AND LABORATORY IRRADIATED DIAMOND
  T218 Gemological Research in the 21st Century: Characterizing Diamonds and other Gem Minerals
  Tuesday, 29 October 2013

  8:00 AM - 12:00 PM

  Room 205