30.37 Ct blue-green swirl boulder opal
A large rectangle boulder opal with strong blues and green swirls.
- 30.37 carats.
- 26 x 18.2 mm / 1.02 x 0.71".
- 6.1 mm / 0.24" thick.
- Natural solid boulder opal.
- Mined by Sue at her Mt Margaret opal mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining
