Kyanite is an uncommon mineral that often bears a deep blue hue. The mineral is used industrially in the production of refractory materials for kilns and foundries (refractory materials can absorb a lot of heat and still maintain their strength). It is also used in ceramics, abrasives, and some electronics. Transparent, brilliantly-colored kyanites may be carved into gemstones, and particularly striking crystal specimens are valued by collectors.Kyanite is believed to ease many physical ailments, as well as helping to achieve better mental awareness and an improved emotional state. Those who use it say it calms nerves and helps to improve communication and compassion. It is often used by those who seek better relationships but don't want to lose their own self-awareness.