1. A spinel used as a gemstone (usually dark red)
   - ruby spinel

Type of: spinel

Encyclopedia: Spinel ruby

• Coppola
• copra
• copra oil
• Coprinaceae
• Coprinus
• Coprinus atramentarius
• Coprinus comatus
• coprolalia
• coprolite
• coprolith
• coprophagia
• coprophagous
• coprophagy
• coprophilia
• copse
• Copt
• copter
• Coptic
• Coptic Church
• Coptis
• Coptis groenlandica
• Coptis trifolia groenlandica
• copula
• copular
• copulate