SEDA ROUGH OPALS
PIPE CRYSTAL ROUGH
This is a natural crystal opal mined in Jundah queensland. it is called pipe opal as its formed in hollow pipe cavaties in sandstone so you may see some sand material in the opal.
In some of these stones you will see natural sandstone which have iron staining which shows they are very old. You might like to treat with a stabilizer like opticon
Transparent material. This could also be sliced thinner for opal inlay material.
We have taken the photo wet on a black background