人工合成钻石的鉴定方法 | GIA 知识交流
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58:27
深入了解蓝宝石: 处理与产地 | GIA 知识交流
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1:05:12
Rough Diamonds: Natural Crystal Shapes & Surface Features | GIA Knowledge Sessions Webinar Series
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56:05
尖晶石概览: 处理与产地 | GIA 知识交流
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24:02
El futuro de la humanidad en un mundo con IA | The Future con Hannah Fry
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1:15:02
VKC talk by Branko Deljanin | 13 February 2025
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12:24
Majorana 1 Explained: The Path to a Million Qubits
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5:41
【💎實驗室培育鑽石 VS 天然鑽石💎】 比較兩類鑽石的八大分別 🧐
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3:33:33