6.87 Ct small green-blue boulder opal
A small rectangle boulder opal with strong green-blues. This opal has a flat back, but it curves up a little the corners.
- 6.87 carats.
- 13.5 x 10.1 mm / 0.53" x 0.39".
- 4.1 mm / 0.16" thick.
- Natural solid boulder opal.
- Mined by Sue at her Mt. Margaret opal mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining