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

Derived forms: ruby spinels

Type of: spinel

• copacetic
• copaiba
• copaiba balsam
• copal
• copaline
• copalite
• coparcenary
• coparcener
• copartner
• copartnership
• copasetic
• copay
• copayment
• cope
• cope with
• copeck
• Copehan
• Copenhagen
• copepod
• ruck up
• ruckle
• rucksack
• ruckus
• ruction
• rudaceous rock