4.11 Ct colourful rectangle boulder opal
A small rectangle boulder opal with fun greens, pinks and blues.
- 4.11 carats.
- 10.5 x 9.4 mm / 0.41 x 0.37".
- 3.7 mm / 0.14" thick.
- Natural solid boulder opal.
- Mined by Sue at her Mt Margaret opal mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining
