4.20 Ct free-form boulder opal
A free-form boulder opal with light purples on a light background.
- 4.20 carats.
- 17.4 x 10.1 mm / 0.68" x 0.39".
- 3.6 mm / 0.14" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining