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Entry № 067

Blue Kyanite

Aluminium Silicate

Sapphire-blue blades that align a room.

Chakra

Throat · Third Eye

Element

Air · Storm

Zodiac

Aries · Taurus · Libra

Blue Kyanite

I. The Metaphysical Reading

How the stone has been held.

Blue kyanite is worked with as a stone of alignment, physical, energetic and communicative. Practitioners hold it during meditation to steady the throat and brow, and it is one of the few stones in the modern repertoire commonly described as not needing to be cleared.

Chakra
Throat · Third Eye
Element
Air · Storm
Zodiac
Aries · Taurus · Libra
Keynote
Sapphire-blue blades that align a room.

II. The Scientific Reading

What the lattice actually does.

Blue kyanite is the blade-form aluminium silicate whose colour comes from trace iron and titanium substituting into the triclinic lattice. Its most unusual property is directional hardness: about 4 along the length of the blade and up to 7.5 across it, a difference so pronounced the mineral was formerly known as disthene, meaning two strengths. High-grade specimens come from the Nuristan Province of Afghanistan and Nepal, and from the Barra do Salinas district in Minas Gerais, Brazil.

Formula
Al₂SiO₅
System
Triclinic
Hardness
4 – 7.5 (highly anisotropic)
Provenance
Brazil, Nepal, India, Switzerland, USA (North Carolina)

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
Al₂SiO₅
Crystal System
Triclinic
Mohs Hardness
4 – 7.5 (highly anisotropic)
Density
3.53 – 3.65 g/cm³
Refractive Index
1.712 – 1.734
Provenance
Brazil, Nepal, India, Switzerland, USA (North Carolina)
Color Origin
Sapphire to denim blue bladed crystals with silvery cleavage

Related Crystals

Stones that share this lattice

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Blue Lace Agate

A quiet blue voice for the throat.