47.70 Ct large geometric matrix boulder opal
A large geometric matrix boulder opal with some rainbow stripes on a dark body tone / background.
- 47.70 carats.
- 41.6 x 21.6 mm / 1.63" x 0.85".
- 6.5 mm / 0.25" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- High commercial / gem grade.
- Opal ID 2504.