porphyry
noun /ˈpɔːfəri/
/ˈpɔːrfəri/
[uncountable]- a type of hard red stone that contains red and white crystals, which can be polished (= made smooth and shiny by rubbing) and made into statues, jewellery, etc.Word Originlate Middle English: via medieval Latin from Greek porphuritēs, from porphura ‘purple’.