Entry № 185
Epididymite
Epididymite
A rare beryllium bloom from alkaline pegmatites.
Chakra
Third Eye · Crown
Element
Air
Zodiac
Aquarius

I. The Metaphysical Reading
How the stone has been held.
Epididymite is worked with as a stone of subtle discernment, kept in a small box on the study desk during scholarship, translation and any practice that asks a person to notice small differences. Practitioners hold it as a reminder that precision is a form of respect.
- Chakra
- Third Eye · Crown
- Element
- Air
- Zodiac
- Aquarius
- Keynote
- A rare beryllium bloom from alkaline pegmatites.
II. The Scientific Reading
What the lattice actually does.
Epididymite is a rare hydrated sodium-beryllium silicate that crystallises in the late-stage hydrothermal environments of alkaline nepheline-syenite pegmatites — most famously at Mont Saint-Hilaire in Québec and the Langesundsfjord in Norway. It is dimorphous with eudidymite, sharing the same NaBeSi₃O₇(OH) chemistry but differing in symmetry.
- Formula
- NaBeSi₃O₇(OH)
- System
- Orthorhombic
- Hardness
- 7 (Mohs)
- Provenance
- Canada (Mont Saint-Hilaire), Norway (Langesundsfjord), Russia (Kola)
References & Sources
Independent mineralogical references used to verify the scientific details above.
Mineral Profile
Fact Sheet
- Chemical Formula
- NaBeSi₃O₇(OH)
- Crystal System
- Orthorhombic
- Mohs Hardness
- 7 (Mohs)
- Density
- 2.55 g/cm³
- Refractive Index
- 1.542 – 1.560
- Provenance
- Canada (Mont Saint-Hilaire), Norway (Langesundsfjord), Russia (Kola)
- Color Origin
- Colourless to white bladed and tabular crystals with pearly lustre
Related Crystals
Stones that share this lattice
Next in the Atlas
Erionite
A woollen zeolite handled only behind glass.




