17.40 Ct light blue boulder opal
A cool light blue rectangle boulder opal.
- 17.40 carats.
- 19.1 x 15.7 mm / 0.75" x 0.61".
- 5.1 mm / 0.20" thick.
- Natural solid boulder opal.
- Mined by Sue at her Mt Margaret opal mine in Queensland, Australia.
- Lower commercial grade.
Vendor: Broken River Mining
