Related Clues:

• Stone used for chess sets
• Quartz used in jewelry
• Intaglio material
• Type of chalcedony
• Banded gemstone
• Jet-black gem
• Cameo choice
• Banded chalcedony
• Material for a cameo
• Gemstone in a cameo role?
• It makes cameo appearances
• Rap group with the 1992 hit 'Slam'
• Jet-black stone
• Stone
• Variety of agate