This is a mixed lot of 10 x natural matrix boulder opal rough and rubbed pieces from the mines of Queensland, Australia.
The largest piece is approx. 20mm x 16mm and of 33.10 carats. The smallest piece is approx. 14mm x 8mm of 3.65 carats. All of the pieces have colour of some sort and total 126.25 carats.
These pieces have been photographed wet, to show how they would look if polished or varnished. They are unlikely to produce opals of gem quality and should be considered mineral samples.