Ahmadjan Abduriyim, Kazuko Saruwatari, and Yusuke Katsurada, 五月 5, 2017
调查了日本矿床中出产的硬玉的产地、颜色、质地和化学组成。
Sharon Bohannon（莎伦·博汉农）, 三月 17, 2017
加入北方地区的环球之旅，探索来自极地的宝石。
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