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white sapphire 【礦物】剛玉。

white sauce

Are described as yellow , purple , pink , green or white sapphires 。當我們談論彩色藍寶石,是指黃色紫色粉紅色綠色或白色等。

Research on superfine grinding technology of white sapphire 白剛玉超細研磨工藝研究