What are some gemstones that can heal emotional, physical, and spiritual issues? One of the most powerful and healing gems is kyanite. Kyanite has a hardness of 7 on the Mohs scale and forms in aluminum silicate crystals with an orthorhombic crystal system. It ranges in color from clear to https://ello.co/gemsbiz/post/fdnsrrii1lekyejgtieo4q