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Activity

2024

• GEMOLOGICAL CHARACTERIZATION OF EMERALDS FROM NORTH CAROLINA, UNITED STATES
  T263 Gem Minerals, Localities and Geological Significance (Posters)
  Wednesday, 25 September 2024

  8:00 AM - 5:30 PM

  Hall D

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2022

• SPECIAL COLORS AND OPTICAL EFFECTS OF OREGON SUNSTONE
  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

• DISCOVERY OF A NEW GROUP OF SAPPHIRES FROM ROCK CREEK, MONTANA
  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

• DISCOVERY OF A POSSIBLE NEW GEM MINERAL OF THE BERYL FAMILY FROM THE MOGOK STONE TRACT, MYANMAR
  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

• ISOLATING CHROMOPHORES IN PYRALSPITE GARNET – QUANTITATIVE DEFINITION OF STRENGTH OF CHROMOPHORES AND THEIR IMPACT ON COLOR CHANGE
  T110 Gemological Research in the Twenty-First Century—Characterization, Exploration, and Geological Significance of Diamonds and Other Gem Minerals (Posters)
  Monday, 5 November 2018

  9:00 AM - 6:30 PM

  Halls J-K
• UNRAVELING THE GEOLOGICAL MYSTERIES OF MONTANA'S SAPPHIRE DEPOSITS
  T110 Gemological Research in the Twenty-First Century—Characterization, Exploration, and Geological Significance of Diamonds and Other Gem Minerals (Posters)
  Monday, 5 November 2018

  9:00 AM - 6:30 PM

  Halls J-K

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2017

• BLUE-GREEN PYROPE-SPESSARINE GARNET WITHOUT A COLOR CHANGE PHENOMENON: THE ROLE OF VANADIUM IN THE COLOR OF GARNETS
  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

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2015

• GLASSY MELT INCLUSIONS IN SAPPHIRES FROM THE ROCK CREEK AND MISSOURI RIVER DEPOSITS IN MONTANA, USA
  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
• PRODUCTION OF SPURIOUS PARTIALLY HEALED FRACTURES IN SYNTHETIC CORUNDUM THROUGH HIGH-TEMPERATURE FUSION
  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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2013

• REVERSIBLE COLOR MODIFICATION OF BLUE ZIRCON BY LONG WAVE ULTRAVIOLET RADIATION
  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