precious schorl 贵电气石
schorl rock 黑电气石岩
glass schorl 斧石
schorl-schist 黑电气石片岩
schorl-rock 黑电气石岩
dravite schorl 黑色电气石
Aquamarine with Schorl from Namibia 纳米比亚海蓝宝石与黑电气石
N a black tourmaline consisting of a borosilicate of sodium, iron, and aluminium. Formula: NaFe3B3Al3(Al3Si6O27)(OH)4 黑电气石
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