Single Kyanite Blades . Blue with white quartz veins. Brazil.. Chemical Composition: Aluminum silicate Hardness: Splintery translucent to transparent bladed crystal. Metaphysical Properties: One of only two stones which never needs cleansing or clearing. Stone of attunement. Good for communication, mental awareness. Stimulates psychic awareness. Excellent for meditation and dream recall. Corresponding Astrological Signs: Taurus, Libra, Aries Chakras: Aligns all chakras automatically and immediately. Also used for opening the chakras. Blue Kyanite is also excellent for use specifically on the throat and third-eye chakras.