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Activity

2024

• HIGH RESOLUTION LUMINESCENCE AND RAMAN 3D HYPERSPECTRAL IMAGING OF GEMSTONES
  T164 Gem Minerals, Localities and Geological Significance
  Tuesday, 24 September 2024

  8:00 AM - 12:00 PM

  207A

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2022

• COMPARING A 910 CARAT TYPE IIA DIAMOND WITH SMALLER CLIPPIR DIAMONDS
  T225 Gemological Research in the Twenty-First Century—Gem Minerals and Localities
  Wednesday, 12 October 2022

  8:00 AM - 12:00 PM

  503
• NATURAL PINK DIAMOND COLORED BY THE 525 NM ABSORPTION BAND
  T272 Gemological Research in the Twenty-First Century—Gem Minerals and Localities (Posters)
  Wednesday, 12 October 2022

  2:00 PM - 6:00 PM

  Exhibit Hall F

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2019

• ANALYSIS OF 480 NM BAND IN A BI-COLORED DIAMOND
  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
• THE NEW NICKEL SULFIDE MINERAL CROWNINGSHIELDITE FOUND WITHIN A SUPERDEEP DIAMOND FROM LETSENG
  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
• FRAGMENTS SAMPLED AT EARTH'S TRANSITION ZONE AND LOWER MANTLE BOUNDARY BY A TYPE IAB DIAMOND
  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

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2018

• NATURALLY IRRADIATED BLACK DIAMONDS FROM MARANGE (ZIMBABWE)
  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
• EVIDENCE OF SUBDUCTED ALTERED OCEANIC CRUST INTO DEEP MANTLE FROM INCLUSIONS OF IAB 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

• MICRO- AND NANO- SIZED INCLUSIONS IN IAB DIAMONDS AND THEIR GEOLOGICAL IMPLICATIONS
  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
• IRRADIATED AND ANNEALED NATURAL PINK DIAMONDS
  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
• DIAMOND FORMATION THROUGH ISOCHEMICAL COOLING OF CHO FLUIDS VS REDOX BUFFERING: EXAMPLES FROM MARANGE PERIDOTITIC AND ZIMMI ECLOGITIC DIAMONDS
  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
• TYPE IIB BORON-BEARING DIAMONDS ARE SUPERDEEP DIAMONDS
  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

• DISTRIBUTION OF [SI-V]- DEFECT IN NATURAL TYPE IIA 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
• A SUBLITHOSPHERIC MANTLE, METALLIC LIQUID ORIGIN FOR THE WORLD'S LARGEST GEM-QUALITY DIAMONDS
  T136 Gemological Research in the Twenty-First Century: Characterization, Exploration, and Geological Significance of Diamonds and Other Gem Minerals
  Monday, 26 September 2016

  1:30 PM - 5:30 PM

  Room 207
• UNUSUAL GEOLOGICAL HISTORY OF RARE TYPE IB DIAMONDS AND THE REASONS FOR THEIR SPECIAL COLOUR
  T136 Gemological Research in the Twenty-First Century: Characterization, Exploration, and Geological Significance of Diamonds and Other Gem Minerals
  Monday, 26 September 2016

  1:30 PM - 5:30 PM

  Room 207

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2015

• PREFERENCE IN FORMATION OF H3 OVER H4 AND ITS IMPLICATION IN GEM DIAMOND IDENTIFICATION
  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
• MICRO-DIAMONDS IN CHROMITITE AND PERIDOTITE
  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
• TYPE IB DIAMOND FORMATION RELATED TO GONDWANA ASSEMBLY: EVIDENCE FROM RE-OS ISOTOPIC COMPOSITIONS OF WEST AFRICAN SULPHIDE INCLUSIONS
  T64 Gemological Research in the 21st Century: Exploration, Geology, and Characterization of Diamonds and other Gem Minerals
  Sunday, 1 November 2015

  1:30 PM - 5:30 PM

  Room 342

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2014

• CARBON ISOTOPE ANALYSIS OF CVD SYNTHETIC GEM 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
• A SPECTROSCOPIC LOOK AT GREEN AND BLUE GEM DIAMONDS COLORED BY ARTIFICIAL IRRADIATION TREATMENT
  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
• ­GROWTH CONDITIONS OF MIXED-HABIT DIAMONDS FROM MARANGE, ZIMBABWE
  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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2005

• SOLID CO2 AND CARBONATE MICRO-INCLUSIONS IN A GEM DIAMOND
  T155 High-Pressure Mineral Physics: To Honor Ho-Kwang Mao, Roebling Medalist II
  Tuesday, 18 October 2005

  8:00 AM - 12:00 PM
• GEM DIAMONDS THAT TEMPORARILY CHANGE COLOR (CHAMELEON DIAMONDS)
  T120 High-Pressure Mineral Physics: To Honor Ho-Kwang Mao, Roebling Medalist I
  Monday, 17 October 2005

  1:30 PM - 5:30 PM