Related Clues:

• Quartz variety
• Wyoming city
• See 32-Across
• Pop artist Johns
• Alberta's ___ National Park
• Gemstone
• Quartz type
• Semi-precious stone
• Form of quartz
• Variety of quartz
• Johns of art
• Opaque gemstone
• The 'blood' in bloodstone
• Man of stone
• Traditional March birthstone