Related Clues:
- Quite sour, off colour
- Quite sour, distressed and blue
- Unknown element with carbon in mineral
- Zinc or rocky mineral in crystal form
- A mineral
- Quite sour cocktail is a shade of blue
- Stone, plastic or zinc
- Mineral gem
- Quite sour nuts, greenish-blue
- Alphabetically last birthstone
- Quit Euros playing in blue
- Semi-precious diamond-like gemstone
- Our one quest, oddly, finding semiprecious stone
- Common mineral, sometimes translucent and of gem quality
- Out with squire changing colour