Few lapidaries know their way around all the peculiarities of this gemstone and have sufficient knowledge of its extraordinarily complex structure to enable them to cut difficult tourmalines as well.
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美
释义
只有少数宝石工艺师了解这宝石的独特特质,且深入研究其复杂的结构,进而有资格来切割这极困难复杂的宝石。
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