- Color: colorless
- Hardness: 6 - 6.5
- Refractive index: 1.50 - 1.52
- Density: 2.40 - 2.46
- Chemical composition: LiAlSi4O10
- Crystal structure: monoclinic
- Origins: Canada, USA, Brazil, Italy, Namibia, Mozambique, Zimbabwe, Russia, Burma, Australia.
Petalite is considered to be a collector's stone, with only eye-clean crystals being valuable. Due to their insufficient hardness and low refractive index, the stone is not used in jewelry.