This is a natural matrix from andamooka that the miner has part treated. He did this to the slabs to give a indication that it faces and then he cut it up. Some stones may need to be treated 2 or 3 times. If you re shape the stone you will have to re treated. This material takes a good natural polish.

Rough taken wet.Remember all rough is a bit of a gamble as some will treat better than you think while others worse-! The only way to make sure is to treat it.

We have listed below how to treat with sugar only but if you like to use acid as the miners do you can find instructions on opal auctions