20.79 Ct green stripe boulder opal
A large geometric boulder opal with a green-blue stripe.
- 20.79 carats.
- 36.4 x 10.5 mm / 1.43 x 0.41".
- 5.6 mm / 0.22" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining