8.40 Ct free-form green and ironstone boulder opal
A free-form boulder opal with strong greens running thought the ironstone host rock.
- 8.40 carats.
- 23 x 10.6 mm / 0.90 x 0.41".
- 4.5 mm / 0.17" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining