A relatively rare blue, violet-blue, or greenish-blue translucent mineral, Na4-5Al3Si3O12S, the chief component of lapis lazuli.

 
  • 天青石一种比较珍贵的透明矿物质,多呈蓝色、蓝紫色或蓝绿色,Na4-5Al3Si3O12S,是杂青金石的主要成分
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