Carnelian
Carnelian is a reddish variety of chalcedony. Chalcedony is a mineral mixture of quartz, moganite and another silica mineral. Agate is another form of chalcedony.
Prevalence: Worldwide - Australia, Austria, Botswana, Brazil, Canada, China, Czech Republic, Egypt, France, Germany, Hungary, India, Japan, Mozambique, Peru, Poland, Portugal, Romania, Russia, Slovakia, South Africa, Sri Lanka, Switzerland, UK, Ukraine, USA