20.97 Ct large pink and green boulder opal
A large, free-form (almost rectangular) boulder opal with rainbow colours on a lighter background / body tone.
- 20.97 carats.
- 23.6 x 15.1 mm / 0.92" x 0.59".
- 5.4 mm / 0.21" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining