7.51 Ct rainbow boulder opal
A geometric boulder opal with deep, full-face rainbow colours on a lilac-hued dark background / body tone. An incredible opal that is hard to beat.
- 7.51 carats.
- 21.5 x 10.3 mm / 0.84" x 0.40".
- 4.8 mm / 0.18" thick.
- Natural solid boulder opal.
- Mined by Sue at her Yaraka opal mine in Queensland, Australia.
- Top gem grade.
- Opal ID 2833.