Can you help me with value on this and identification

I believe this might be what is referenced as Kingman Gold, stabalized with copper infused. It has black spider matrix and looks like gold throughout. This is on a cord and has coral.

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Posted this but forgot to ask if anyone can help me with identification of the turquoise and value. Thanks for any help that might be provided.

Hello, this appears to be block, not real turquoise. If you feel it is real you could put a little fire to it and see if it melts.

Could this possibly be polymer clay?

I am not positive what exactly the material is they use, we always refer to this style has plastic. Hope this helps.