Related Clues:
- May birthstone, once
- Dark form of quartz
- Playing marble with bands
- Man of stone
- A fine playing marble
- Mortar/pestle material
- Cousin of a cat's-eye
- Marble variety
- Traditional March birthstone
- Jet-black rock
- Quartz mineral
- Rather small type
- Figurine stone
- Makeup of some mortars and pestles
- Ornamental quartz