12.51 Ct rectangle matrix boulder opal
A small matrix boulder opal with a convex face and light blue opal veins.
- 12.51 carats.
- 15.5 x 12.9 mm / 0.61" x 0.50".
- 5.3 mm / 0.20" thick.
- Natural solid boulder opal.
- Mined by Sue at her Mt. Margaret opal mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining