Gemological Information For Kyanite

Color: Light to Dark Blue, Colorless, Gray or Brown (Banded with Blue)
Crystal Structure Triclinic
Refractive Index: 1.716 - 1.731
Durability: Poor
Hardness: 6 to 7.5 or 4 to 5 (Depending on Angle)
Similar Stones: Idocrase, Epidote, Sapphire, Tanzanite, Spinel
Treatments: None Known at this Time
Country of Origin: U.S., Russia, India, Pakistan, Myanmar, Kenya, Brazil

Kyanite Care

Ultrasonic Cleaning: Never
Steam Cleaning: Never
Warm Soapy Water: Safe
Chemical Attack: Not Attacked
Light Sensitivity: Stable
Heat Sensitivity: Sensitive