Entry № 310
Orthoclase
Potassium aluminium silicate
The feldspar that builds continents.
Chakra
Solar Plexus · Heart
Element
Earth
Zodiac
Virgo · Capricorn

I. The Metaphysical Reading
How the stone has been held.
Orthoclase is worked with as a stone of grounded self-worth and cooperative will. As a major constituent of granite, it is read as a reminder that strength often comes from being part of a larger structure — family, community, or purpose.
- Chakra
- Solar Plexus · Heart
- Element
- Earth
- Zodiac
- Virgo · Capricorn
- Keynote
- The feldspar that builds continents.
II. The Scientific Reading
What the lattice actually does.
Orthoclase is a common potassium feldspar and one of the most abundant minerals in Earth's crust. It forms the pink or salmon crystals familiar in granites and syenites and is also found as moonstone when exsolution lamellae create adularescence.
- Formula
- KAlSi₃O₈
- System
- Monoclinic
- Hardness
- 6 – 6.5 (Mohs)
- Provenance
- Madagascar, Brazil, USA, Switzerland
References & Sources
Independent mineralogical references used to verify the scientific details above.
Mineral Profile
Fact Sheet
- Chemical Formula
- KAlSi₃O₈
- Crystal System
- Monoclinic
- Mohs Hardness
- 6 – 6.5 (Mohs)
- Density
- 2.55 – 2.63 g/cm³
- Refractive Index
- 1.518 – 1.537
- Provenance
- Madagascar, Brazil, USA, Switzerland
- Color Origin
- Pink, salmon, white, grey, rarely green or blue
Related Crystals
Stones that share this lattice
Next in the Atlas
Pagoda Calcite
Tiered crystal towers of quiet geometry.




