Entry № 065
Blue Jay Sapphire
Corundum (Al₂O₃)
The old blue stone of vows and verdicts.
Chakra
Third Eye · Throat
Element
Air
Zodiac
Virgo · Sagittarius

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
Next in the Atlas
Blue John Fluorite
One hill in England, and nowhere else.




