Related Clues:

• Crystal-lined rock
• It may be lined with quartz
• Sparkly rock
• Hollow rock
• Glittery stone
• Crystal rock
• Crystal-bearing rock
• Crystal-lined stone
• Sparkly paperweight
• Rockhound's find
• Hollow, crystal-containing rock
• Rock that glitters inside
• Thunder egg
• Keeper for a rock collector
• Rock shop staple