Related Clues:

• Variety of chalcedony
• Quartz type
• It might make a cameo appearance
• It makes a cameo appearance
• Semi-precious stone
• Stone used for jewelry
• Form of quartz
• Variety of quartz
• Banded gem
• Boycott
• Multi-colored quartz
• Black, to bards
• Black stone
• Black in verse
• Stone used for chess sets