Feature articles from this issue:
- Blue Sapphires from Mogok, Myanmar: A Gemological Review by Wasura Soonthorntantikul, Ungkhana Atikarnsakul, and Wim Vertriest
- Gemological Characterization of Peridot From Pyaung-Gaung in Mogok, Myanmar by Montira Seneewong-Na-Ayutthaya, Wassana Chongraktrakul, and Tasnara Sripoonjan
- History of Emerald Mining in the Habachtal Deposit of Austria, Part I by Karl Schmetzer
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