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
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