Feature articles from this issue:
- A Canary in the Ruby Mine: Low-Temperature Heat Treatment Experiments on Burmese Ruby by E. Billie Hughes and Wim Vertiest
- Fluorescence Characteristics of Two Copper Diffused Plagioclase Feldspars: Labradorite and Andesine by Qingchao Zhou, Chengsi Wang, and Andy H. Shen
- Composition and Spectral Characteristics of Porcelain-Treated Turquoise by Liying Huang, Quanli Chen, Yan Li, Zuowei Yin, Fengshun Xu, Xinxin Gao, and Yang Du
- Never Stop Innovating: Gem Artist Chi Huynh by Tao Hsu, Artitaya Homkrajae, and Kevin Schumacher
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