Related Clues:

• Ruby, e.g.
• Idaho, the ___ State
• Prized rock
• Cat's-eye, e.g.
• Lapidary's item
• It may be precious
• Rock that glitters inside
• Coarse-grained rock
• Lapidarist's item
• Emerald, e.g.
• Banded metamorphic rock
• Valuable rock
• Amber, for one
• Ring feature
• Metamorphic rock