Red jasper. This semi-precious mineral is mainly made up of chalcedony (a type of quartz). Its reddish colour comes from the presence of other mineral
Red jasper. This semi-precious mineral is mainly made up of chalcedony (a type of quartz). Its reddish colour comes from the presence of other minerals such as haematite (iron oxide).
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Photo credit: © TH FOTO-WERBUNG/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
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Keywords: chalcedony, cut, dioxide, geology, jasper, mineral, polished, quartz, red, rock, semi-precious, silicon, stone