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

Type of: spinel

Encyclopedia: Spinel ruby

• hire-purchase
• hired
• hired gun
• hired hand
• hired help
• hired man
• hireling
• hirer
• hiring freeze
• hiring hall
• Hirohito
• Hiroshima
• Hirschfeld
• Hirschsprung
• Hirschsprung's disease
• hirsute
• hirsuteness
• hirsutism
• Hirudinea
• hirudinean
• Hirudinidae
• Hirudo
• Hirudo medicinalis
• Hirundinidae
• Hirundo