Related Clues:
- Sort of agate
- Stone in front of arched door
- It features rock bands
- Opening letter scandal, as it were, is a gem
- Material in mortars and pestles
- Marble resembling a gemstone
- Impure form of quartz
- Hue similar to black olive
- Stone used for some pendants
- Agate form
- Ornamental chalcedony
- Cryptocrystalline form of quartz
- Banded cameo stone
- Impure form of quartz, used as a gemstone
- Corroded under silver stone