No, it was more in terms of techniques, motifs and styles of working the medium. Possible cultural contacts, mostly via trade, were a consideration. There were similarities between the two but so was the case with the Incas who obviously had no contact. I concluded the similarities were mostly the result of the medium itself, pure gold. It lends itself to wire, leaf and embossed designs for decoration and is ill-suited for anything utilitarian...

How many carats is pure gold? I only know of 9 and 18 carat gold.

Pure is 24. It's too soft to make good jewelry, so you'd only see 24K gold in an object that was meant to be owned as a conversation piece of some kind, but not worn.

Thank you for the answer!