过去的网络研讨会
您现在可以通过单击下面的链接观看我们过去的一些网络研讨会!
记得点赞这些视频并订阅我们的 YouTube 频道!
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神奇的亚历山大变色石
2020 年 10 月
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小红点:尖晶石
Spinel In Marble
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Pearls,
Natural or Cultured
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观赏宝石:青金石、绿松石、孔雀石
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The Twinkle of
Star Gems
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关于橄榄石的事实:八月诞生石
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The Most Desirable Cat’s Eye Gemstone: Chrysoberyl
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蛋白石的多彩世界
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现象宝石:长石群
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祖母绿:绿色宝石的定义
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锆石与氧化锆:天然与仿制
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探索帕帕拉恰:蓝宝石之王
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