Entry № 333
Preseli Bluestone
Spotted dolerite
The stone that walked to Stonehenge.
Chakra
Throat · Third Eye
Element
Earth · Air
Zodiac
Capricorn · Sagittarius

I. The Metaphysical Reading
How the stone has been held.
Preseli bluestone is treated as a stone of ancestral memory and place. British practitioners keep it for dreamwork, for reconnecting with land and lineage, and for ceremonies at solstice — its reputation resting on its documented journey from Welsh hills to Salisbury Plain.
- Chakra
- Throat · Third Eye
- Element
- Earth · Air
- Zodiac
- Capricorn · Sagittarius
- Keynote
- The stone that walked to Stonehenge.
II. The Scientific Reading
What the lattice actually does.
Preseli bluestone is a spotted dolerite from the Mynydd Preseli in Pembrokeshire, Wales, composed chiefly of plagioclase feldspar and augite with distinctive pale spots of altered feldspar. Petrological and geochemical work has matched the bluestone monoliths at Stonehenge to specific outcrops such as Carn Goedog and Craig Rhos-y-felin, roughly 225 km from the monument. The rock is also weakly magnetic in places due to its iron-titanium oxide content.
- Formula
- Ca(Mg,Fe)Si₂O₆ + plagioclase feldspar
- System
- Monoclinic + triclinic (rock)
- Hardness
- 6 – 7 (Mohs)
- Provenance
- Preseli Hills, Pembrokeshire, Wales
References & Sources
Independent mineralogical references used to verify the scientific details above.
Mineral Profile
Fact Sheet
- Chemical Formula
- Ca(Mg,Fe)Si₂O₆ + plagioclase feldspar
- Crystal System
- Monoclinic + triclinic (rock)
- Mohs Hardness
- 6 – 7 (Mohs)
- Density
- 2.9 – 3.1 g/cm³
- Refractive Index
- 1.66 – 1.72
- Provenance
- Preseli Hills, Pembrokeshire, Wales
- Color Origin
- Blue-grey to blue-green with white feldspar spots
Related Crystals
Stones that share this lattice
Next in the Atlas
Prophecy Stone
Angular desert iron, heavy in the hand.




