marcasite

marcasite
[ˈmɑːkəsʌɪt, -ziːt]
noun
  1. a semi-precious stone consisting of iron pyrites
    白铁矿石(一种次贵重宝石)
    ■[mass noun]a bronze-yellow mineral consisting of iron disulphide but differing from pyrite in typically forming aggregates of tabular crystals
    黄铁矿
    ■a piece of polished steel or a similar metal cut as a gem
    磨钢装饰石
语源
  1. late Middle English: from medieval Latin marcasita, from Arabic mar kaŝ ṯa, from Persian
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