11.76 Ct rainbow boulder opal
A stunning boulder opal with brilliant rainbow colours and wonderful movement.
- 11.76 carats.
- 21.3 x 13.8 mm / 0.83 x 0.54".
- 4.4 mm / 0.17" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Gem grade.
- Opal ID 2317.