Related Clues:
- Diamond substitute
- Greenish-blue color
- Sky blue gem
- Clear gemstone
- Cyan relative
- Color similar to robin's-egg blue
- Bluish gem cut form translucent mineral
- Bluish-white gem cut from translucent mineral
- 'Hard mineral, semi-precious gemstone (6)'
- Modern December birthstone
- Mineral water ultimately put in impure zinc when oxygenated
- Mineral such as jacinth
- Shade of blue - gemstone
- Gemstone, maybe jacinth
- Greenish-blue colour