Field ReportGems & Gemology, Summer 2016, Vol. 52, No. 2跟随 Rainier（雷尼尔）的步伐：契沃尔祖母绿矿之旅 (英语)Robert Weldon, Jose Guillermo Ortiz, and Terri Ottaway八月 3, 2016下载 PDF 版本
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