1. The cryptocrystalline structure of the mineral gives it a unique appearance.
(这个矿物的微晶质结构赋予了它独特的外观。)
2. The cryptocrystalline structure of the gemstone makes it difficult to identify without using specialized equipment.
(这种宝石的微晶质结构使得在没有专门设备的情况下很难鉴别。)
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