28.28 Ct large geometric boulder opal
A large geometric boulder opal with bright rainbow colours on a lilac-hued, dark background / body tone.
- 28.28 carats.
- 32.1 x 16.9 mm / 1.26 x 0.66".
- 5.2 mm / 0.20" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Gem grade.
- Opal ID 3078.