翠
祖母绿是绿柱石矿物的一种,其特点是由于含有微量的铬(有时还含有钒)而呈现鲜艳的绿色。其化学式为硅酸铍铝。祖母绿通常存在于火成岩、变质岩和沉积岩中。祖母绿的重要产地包括哥伦比亚、巴西、阿富汗和赞比亚。
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