Thó-lūn:Soān-chio̍h

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璇石

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用光焱(brilliant)法切出來,鑲佇手指頂的璇石

璇石是碳的一種形,嘛是天然的材料裡上蓋tēng的,璇石的tēng度懸,對光的波散(dispersion)閣懸,予伊佇工業抑珠寶攏真有路用。

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