4.54 Ct green-blue boulder opal
A free-from boulder opal with green-blue colours.
- 4.54 carats.
- 13.6 x 9.7 mm / 0.53 x 0.38".
- 4 mm / 0.15" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining
