French Minerals and Crystals of the World
45,00€
Veins of opal (hydrated silica) formed in cracks and cavities in a ferruginous matrix (iron-rich sedimentary rock).
This is the so-called boulder opal, typical of the Bulgroo opal field in Queensland, Australia.
Beautiful contrast and opalescence.
Veins of opal (hydrated silica) formed in cracks and cavities in a ferruginous matrix (iron-rich sedimentary rock).
This is the so-called boulder opal, typical of the Bulgroo opal field in Queensland, Australia.
Beautiful contrast and opalescence.
This post is also available in: French
| Weight | 0,1 kg |
|---|---|
| Dimensions | 8,2 × 5 × 3,4 cm |
