Hawk's Eyeis a blue-gray to blue-green opaque gemstone variety of fibrous quartz. More specifically, it is a variety of macrocrystalline quartz. Hawk's eye is a pseudomorph of quartz.
A pseudomorph is one mineral that changes into another mineral over time. In the case of hawk's eye, it began its life as crocidolite and was later transformed into quartz. Crocidolite is a fibrous blue mineral belonging to the riebeckite family of amphibole silicates.
Hawk's Eye enhances integrity of communication and practical communication.