Entry № 073
Blue Topaz
Aluminium Fluorosilicate
Clear sky in a faceted stone.
Chakra
Throat · Third Eye
Element
Air · Water
Zodiac
Sagittarius

I. The Metaphysical Reading
How the stone has been held.
Blue topaz is worked with as a stone of articulate honesty and clear intention. Practitioners set it in rings worn on the dominant hand for public speaking, teaching and any work where words become record.
- Chakra
- Throat · Third Eye
- Element
- Air · Water
- Zodiac
- Sagittarius
- Keynote
- Clear sky in a faceted stone.
II. The Scientific Reading
What the lattice actually does.
Almost all blue topaz in the trade begins as colourless topaz that is irradiated and gently heated to produce stable blue colour centres, a treatment applied since the late 1970s. Natural blue topaz does occur, notably at the Brazilian localities of Minas Gerais and at the Mason County deposit in Texas, but it is uncommon and paler than the treated material. Topaz is an aluminium fluorosilicate with excellent basal cleavage.
- Formula
- Al₂SiO₄(F,OH)₂
- System
- Orthorhombic
- Hardness
- 8 (Mohs)
- Provenance
- Brazil (Minas Gerais), Nigeria, Sri Lanka, USA (Texas)
References & Sources
Independent mineralogical references used to verify the scientific details above.
Mineral Profile
Fact Sheet
- Chemical Formula
- Al₂SiO₄(F,OH)₂
- Crystal System
- Orthorhombic
- Mohs Hardness
- 8 (Mohs)
- Density
- 3.49 – 3.57 g/cm³
- Refractive Index
- 1.606 – 1.644
- Provenance
- Brazil (Minas Gerais), Nigeria, Sri Lanka, USA (Texas)
- Color Origin
- Sky, Swiss and London blue transparent gem
Related Crystals
Stones that share this lattice
Next in the Atlas
Blueberry Fluorite
Small cubes of night.




