Feature articles from this issue:
- Low-Temperature Heat Treatment of Pink Sapphire from Ilakaka, Madagascar
by Sudarat Saeseaw, Charuwan Khowpong, and Wim Vertriest
- Baroque-Era Rose Cuts of Colored Stones: Highlights from the Second Half of the Seventeenth Century by Karl Schmetzer
- Fluorescence Characteristics of Blue Amber from the Dominican Republic, Mexico, and Myanmar by Zhiqing Zhang, Xinran Jiang, Yamei Wang, Fanli Kong, and Andy H. Shen
- Mineral Inclusions in Sapphire from Basaltic Terranes in Southern Vietnam: Indicator of Formation Model by Doan Thi Anh Vu, Abhisit Salam, Alongkot Fanka, Elena Belousova, and Chakkaphan Sutthirat
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