是打磨 Polishing。另外Surface Coating、Dyeing/Bleach、Oiling、 Heat Treatment等等,都是常用手法,目的是彰顯原石的美貌,或者彌補天然的瑕疵。
是打磨 Polishing。另外Surface Coating、Dyeing/Bleach、Oiling、 Heat Treatment等等,都是常用手法,目的是彰顯原石的美貌,或者彌補天然的瑕疵。
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