So, I am not even close to an expert, I don’t even have a good mineral collection yet… But, when I hear opal I think opalescent. The stone in the picture doesn’t look like it is at all. I have seen a few opal that just have veins or like crackles of opalescence in them. But, even if it’s pretty solid looking… There is something. They can be needle point big and spread far apart throughout…But it’s there if it’s there. And, it shows in pics. If someone told me this was an opal and told me they have absolutely no proof of that. I wouldn’t believe them. That’s just me though.