A lovely small round boulder opal pair. 8.33 carats (total). ~ 11.9 x 11.7 mm. ~ 2.6 mm thick. Natural solid boulder opal. Mined by Sue at her Mt. Margaret...
A rectangle green stripe and light caramel boulder opal pair. 17.14 carats (total). ~ 22.3 x 10.8 mm. ~ 3.7 mm thick. Natural solid boulder opal. Mined by Sue at...
A small green-blue boulder opal. 7.29 carats. 22.8 x 11.1 mm. 3.5 mm thick. Natural solid boulder opal. Mined by Sue at her Mt. Margaret opal mine in Queensland, Australia....
A green-blue free-form boulder opal. 2.99 carats. 15.5 x 8.4 mm. 2.6 mm thick. Natural solid boulder opal. Mined by Sue at her Mt. Margaret opal mine in Queensland, Australia....
A small oval boulder opal. 3.14 carats. 12 x 8 mm. 3 mm thick. Natural solid boulder opal. Mined by Sue at her Mt. Margaret opal mine in Queensland, Australia....
A small, dark boulder opal with a bright green-blue stripe. 4.45 carats. 17 x 8.5 mm. 3 mm thick. Natural solid boulder opal. Mined by Sue at her Mt. Margaret...
A lovely rectangle matrix boulder opal. 8.31 carats. 17.3 x 13.6 mm. 2.9 mm thick. Natural solid boulder opal. Mined by Sue at her Yaraka opal mine in Queensland, Australia....
A lovely large green and pastel pink boulder opal. 37.95 carats. 36.5 x 20.2 mm. 4.9 mm thick. Natural solid boulder opal. Mined by Sue at her Mt. Margaret opal...
