I bought this for $12.99 at a thrift store - no color comes off with an alcohol swab and the beads shine up with a polishing cloth so I think these are a couple of signs that might point toward actual turquoise and real silver? There are no stamps anywhere. Curious what you guys think as far as age, authenticity, maker etc. I realize with no stamps it’s conjecture, just appreciate any informed guesses, thank you!