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Synthetic opal or not? These opals need testing!

While I was in Tucson this year I cam across some opal that had me stumped for a while. At first I thought it was synthetic opal but then came to a conclusion. Before I make my mind up they need testing. So will be sending them away for lab testing to see what they really are. I did think they were synthetic opals and I have an article and video on them here but now I am not so sure. If they were they would be pretty incredible as they have color bars.

I will be sending them to Tony Smallwood for testing within the next few days.

Have a good look at the images if you know what it is and want to join the conversation please leave a comment below. I will be making a video about it all in the coming weeks