7.73 Ct colourful free-form boulder opal
A colourful boulder opal with some fun patterning on a semi dark background.
- 7.73 carats.
- 17.7 x 11.3 mm / 0.69" x 0.44".
- 3.9 mm / 0.15" thick.
- Natural solid boulder opal.
- Mined by Sue at her Mt. Margaret opal mine in Queensland, Australia.
- Lower commercial grade, with some natural minor inclusions (please see photos).
Vendor: Broken River Mining