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

Derived forms: ruby spinels

Type of: spinel

• bordered
• borderer
• borderland
• borderline
• borderline intelligence
• borderline schizophrenia
• bore
• bore bit
• bore-hole
• boreal
• boreas
• borecole
• bored
• boredom
• borer
• boresight
• Borges
• Borgia
• boric
• boric acid
• boride
• boring
• boringly
• boringness
• Boris Fyodorovich Godunov