4.14 Ct blue boulder opal
A blue and purple rectangle boulder opal.
- 4.14 carats.
- 14.8 x 9.4 mm / 0.58 x 0.37".
- 3.1 mm / 0.12" thick.
- Natural solid boulder opal.
- Mined by Sue at her Mt. Margaret opal mine in Queensland, Australia.
- Lower commercial grade.
Vendor: Broken River Mining
