25.51 Ct free-form boulder opal
A large free-form boulder opal with rainbow colours.
- 25.51 carats.
- 28.3 x 21.3 mm / 1.11 x 0.83".
- 5.5 mm / 0.21" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Gem grade.
- Opal ID 2446.
