15.36 Ct dark blue boulder opal
A free-form boulder opal with lovely dark blues and purples.
- 15.63 carats.
- 28.5 x 13.6 mm / 1.12" x 0.53".
- 4.4 mm / 0.17" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining