![crocidolite hawk’s eye](https://www.patrickvoillot.com/wp-content/uploads/2021/03/oeil-de-faucon-crocidolite-cabochon-bresil80.png)
compact quartz
This group includes compact quartz containing inclusions of another mineral which determines the appearance and color. Tiger’s Eye and Hawk Eye: The name comes from the fact that the polished cabochons show a light stripe evoking the split pupil of a tiger, the second name