16.71 Ct green-blue opal
A large geometric boulder opal with greens and blues and a black background / body tone.
- 16.71 carats.
- 32.3 x 10.5 mm / 1.26 x 0.41".
- 5.2 mm / 0.20" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Gem grade.
- Opal ID 1219.