42.45 Ct large rectangle boulder opal
A large rectangle boulder opal with brilliant rainbow colours. Truly one-of-a-kind.
- 42.45 carats.
- 40.8 x 13.6 mm / 1.60 x 0.53".
- 6.5 mm / 0.25" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Top gem grade.
- Opal ID 2788.