• Summer 2020

Summer 2020

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Feature articles from this issue:

  • Naturally Colored Yellow and Orange Gem Diamonds: The Nitrogen Factor by Christopher M. Breeding, Sally Eaton-Magaña, and James E. Shigley
  • Separation of Natural from Laboratory-Grown Diamond Using Time-Gated Luminescence Imaging by Colin D. McGuinness, Amber M. Wassell, Peter M.P. Lanigan, and Stephen A. Lynch
  • History of the Chivor Emerald Mine, Part II (1924–1970): Between Insolvency and Viability by Karl Schmetzer, Gérard Martayan, and Andrea R. Blake
  • Optical Whitening and Brightening of Pearls: A Fluorescence Spectroscopy Study by Chunhui Zhou, Tsung-Han Tsai, Nicholas Sturman, Nanthaporn Nilpetploy, Areeya Manustrong, and Kwanreun Lawanwong
  • Hydrogen and Oxygen Stable Isotope Ratios of Dolomite-Related Nephrite: Relevance for Its Geographic Origin and Geological Significance by Kong Gao, Ting Fang, Taijin Lu, Yan Lan, Yong Zhang, Yuanyuan Wang, and Yayun Chang

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SKU: 4302003