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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) |
Family: | |
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 |