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Kyanite

- Formula
- Al2OSiO4
- Crystal System
- Triclinic
- Crystal Habit
- Columnar, Fibrous
- Cleavage
- Perfect, Imperfect, None
- Luster
- Vitreous - Pearly
- Color
- blue, white, gray, green, black
- Streak
- white
- Class
- Triclinic - Pinacoidal
- Fracture
- Brittle
- Hardness
- 4-7
- WebMineral
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- Mindat
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Kyanite from Pizzo Forno, Chironico Valley, Leventina, Ticino, Switzerland

Blue bladed Kyanite crystals with Schorl.
Kyanite from Kola Peninsula, Russia

Deep blue Kyanite blades to 3cm in green Fuchsite.
Kyanite from Cobble Mt. Reservoir, Blanford, Maryland, United States

Long bluish green Kyanite blades to 8cm.
Kyanite from Marilac, Minas Gerais, Brazil

For black Kyanite - not bad. This one kind of reminds me of a "comb-over".
Kyanite from Bahia, Brazil
Blue bladed and platy crystals of Kyanite to 7cm.
Kyanite from Barra do Salinas, Coronel Murta, Minas Gerais, Brazil

Deep blue blades of Kyanite to 7cm. Note the darkest blue color is a band through the center, typical for Kyanite.
Kyanite from Mautia Hill, Central prov., Dodoma, Tanzania
Unusual green bladed Kyanite.
Kyanite from Cullen, Charlotte Co., Virginia, United States
Blue divergent crystals of Kyanite to 3.5cm in Quartz matrix.
Kyanite from Sponda Alp, Chironico Valley, Leventina, Ticino, Switzerland
Large cabinet specimen of blue Kyanite blades to 8cm long in Pyrophyllite (?) matrix or "mica schist". This is a classic well-know locality which is often featured in many older mineral/geology picture books.