Is this a natural stone?

I saw this in a store the other day. Didn’t buy, it’s not quite my style, but I took a pic to share because I’m just really curious as to what it is? Is it a real stone? It doesn’t really look like a real stone but it doesn’t exactly look man made either.

no, these are most likely manmade materials

Thanks! I figured–it didn’t look quite right but then it did look more natural than some of the other man made stones you see in southwest jewelry.