It would be safer to hand any round found to the police as said and probably best not to carry them around in your junk pouch with metal and nails.
Just my own thoughts and never want to here of any one being hurt.
Cheers
Mod edit: dismantling information removed.
Hi Dappa sorry about the late response.
I have used many acids to try and clean quartz but have found the best results from multiple baths in Oxalic acid with picking in cervices with tooth picks and pins.
The mines department also has an online map viewer here of the Lightning ridge area which is helpful.
https://www.resourcesandgeoscience.nsw.gov.au/miners-and-explorers/applications-and-approvals/opal-mining/NSW-Claims
If you go into the Ridge to the mines Department for a hard copy of the...
I use mine because I am only new to panning I am slow.
With the sluice I cut down the panning to just a couple of times and I can still take my time going through it.
Hi all I have just had a great weekend with a mate and his family to Nundle NSW.
We didnt go after gold as time seemed to slip away but we did go and snag some Prase.
It cleans up nicely and has such depths that it is like Opal in that it is constantly changing depending on the angle you view...
Hi Mick64
I am thinking Moonstones as well or crystal opal.
A similar sized setting on sale at Lightning Ridge shop in doublets was still in the $600 dollar mark.
A lot of opals are set in 925 silver.
Great find all the same.
Hi shivan.
Whilst I have never had anything to do with this type of opal during my last cutting course the instructor touched on this method.
My understanding is the sugar /acid treatment is instead of polishing as it leaves the matrix with a clear gloss finish.
The liquid glass is a two pack...