French Minerals and Crystals of the World
35,00€
Opal veins (hydrated silica) formed in cracks and cavities in a ferruginous matrix (iron-rich sedimentary rock).
Beautiful contrast and opalescence.
This is the so-called boulder opal, typical of the Bulgroo opal field in Queensland, Australia.
Opal veins (hydrated silica) formed in cracks and cavities in a ferruginous matrix (iron-rich sedimentary rock).
Beautiful contrast and opalescence.
This is the so-called boulder opal, typical of the Bulgroo opal field in Queensland, Australia.
This post is also available in: French
| Weight | 0,231 kg |
|---|---|
| Dimensions | 9,6 × 6,5 × 3 cm |
