Feature articles from this issue:

• Topaz from Mason County, Texas by Roy Bassoo, Diane Eames, Matthew F. Hardman, Kenneth Befus, and Ziyin Sun

• Bohemian Garnets as Decorative Materials for Glass Vessels from the Late Sixteenth to Early Eighteenth Centuries by Karl Schmetzer, Hans Albert Gilg, and Hans-Jörg Ranz

• A Unique Petrified Tree Fern from Northeast China by Ying Yan, Xiao-Yan Yu, Han-Yue Xu, and Zhi-Rong Xie

• Slovak Opal: A New Life for a Historical Gem by Peter Semrád

• Micro-Features of Beryl by Nathan Renfro, Tyler Smith, John I. Koivula, Shane F. McClure, Kevin Schumacher, and James E. Shigley

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