Fall 2014 - Volume 50, Issue 3
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Colorless CVD-Grown Synthetic Diamond
Diamond Laser

Overview and commentary on the 2014 Optics & Photonics News article “Diamond Raman Lasers.”

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Colombian Emeralds
Colombian Emerald Mining: Will the Giant Awaken?

Overview and commentary on the 2013 The Journal of Gemmology article “Peñas Blancas: An Historic Colombian Emerald Mine."

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“Red” Chrysoberyl versus Alexandrite: The Impact of Elevated Chromium Levels on Color and Color-Change Properties

Overview and commentary on the 2014 Journal of Gemmology article “Purple to Reddish Purple Chrysoberyl from Brazil.”

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