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Entry № 065

Blue Jay Sapphire

Corundum (Al₂O₃)

The old blue stone of vows and verdicts.

Chakra

Third Eye · Throat

Element

Air

Zodiac

Virgo · Sagittarius

Blue Jay Sapphire

I. The Metaphysical Reading

How the stone has been held.

Sapphire is one of the classical stones of law, teaching and lasting commitment. Practitioners carry it during exams, testimony and vows, and speak of it as a stone that holds a promise steady long after the emotional weather of the day it was made has passed.

Chakra
Third Eye · Throat
Element
Air
Zodiac
Virgo · Sagittarius
Keynote
The old blue stone of vows and verdicts.

II. The Scientific Reading

What the lattice actually does.

Sapphire is the blue gem variety of corundum, aluminium oxide with trace iron and titanium responsible for the colour through an intervalence charge transfer. It is the second hardest natural mineral after diamond and has been mined from the gem gravels of Sri Lanka for more than two thousand years. Modern production is dominated by the Ilakaka district of Madagascar and by the Australian basalt-hosted fields at Anakie and Inverell.

Formula
Al₂O₃ with trace Fe and Ti
System
Trigonal
Hardness
9 (Mohs)
Provenance
Sri Lanka, Madagascar, Australia, Myanmar

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
Al₂O₃ with trace Fe and Ti
Crystal System
Trigonal
Mohs Hardness
9 (Mohs)
Density
3.98 – 4.05 g/cm³
Refractive Index
1.762 – 1.778
Provenance
Sri Lanka, Madagascar, Australia, Myanmar
Color Origin
Rich cornflower to deep royal blue transparent gem

Related Crystals

Stones that share this lattice

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One hill in England, and nowhere else.