A parcel of 3 boulder opals. 8.83 Ct (total). Smalls. Scale bar in millimetres (mm). Natural solid boulder opals. Mined by Sue at her Mt. Margaret opal mine in Queensland,...

A parcel of 3 boulder opals. 11.16 Ct (total). Extra smalls - small. Scale bar in millimetres (mm). Natural solid boulder opals. Mined by Sue at her Mt. Margaret opal...

A set of 2 boulder opals. 6.24 Ct (total). Extra smalls - Small. Scale bar in millimetres (mm). Natural solid boulder opals. Mined by Sue at her Mt. Margaret opal...

A parcel of 4 boulder opals. 8.15 Ct (total). Extra smalls - small. Scale bar in millimetres (mm). Natural solid boulder opals. Mined by Sue at her Mt. Margaret opal...

A parcel of 4 boulder opals. 6.68 Ct (total). Extra smalls - small. Scale bar in millimetres (mm). Natural solid boulder opals. Mined by Sue at her Mt. Margaret opal...

A parcel of 3 boulder opals. 4.73 Ct (total). Extra smalls - small. Scale bar in millimetres (mm). Natural solid boulder opals. Mined by Sue at her Mt. Margaret opal...

A parcel of 3 boulder opals. 3.50 Ct (total). Extra small - small. Scale bar in millimetres (mm). Natural solid boulder opals. Mined by Sue at her Mt. Margaret opal...

A parcel of 3 boulder opals. 6.18 Ct (total). Smalls. Scale bar in millimetres (mm). Natural solid boulder opals. Mined by Sue at her Yaraka opal mine in Queensland, Australia....