Ive gotten rid of most of my gold quartz specimens save for for a few small cabs left for sale but I'm left with some stoned that aren't quite as cut and dry, to my untrained eye at least.
I see some pyrite, but i believe there to be some gold color.
Idk what do you think?
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The easiest way to tell is the needle test. Get a magnifying glass or loupe set up so you can see the golden colored area, then poke it with a needle. Biotite will flake, pyrite will powder, gold will smear.
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