marcasite
noun/ˈmɑːkəsaɪt/, /ˈmɑːkəziːt/
/ˈmɑːrkəsaɪt/, /ˈmɑːrkəziːt/
[countable, uncountable]- a yellow semi-precious stone used in jewelleryWord Originlate Middle English: from medieval Latin marcasita, from Arabic marqašīt̲a, from Persian.
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marcasite