Related Clues:
- Band with the 1993 single 'Slam'
- Banded agate
- Dark form of quartz
- Jet-black rock
- Quartz mineral
- Figurine stone
- Common cameo stone
- Certain stone
- Mineral that's often black
- Gem with colored bands
- Gem used in cameos
- Chalcedony used in cameos
- Precious stone of purple quartz
- Quartz used as a gem
- Stone-like marble with coloured layers