7.74 Ct small colourful rectangle boulder opal
A small rectangular boulder opal, with colourful swirls and stripes. A mini-picture stone!
- 7.74 carats.
- 17.4 x 9.7 mm / 0.68 x 0.38".
- 4.6 mm / 0.18" thick.
- Natural solid boulder opal.
- Mined by Sue at her Mt Margaret opal mine in Queensland, Australia.
- Commercial grade.
Vendor: Broken River Mining
