Mica, Pyrite vs gold GPEX
Oct 23, 2014· Mica gathers its color from reflected light much more dramatically than gold, and will lose its color when the flakes are tilted in another direction. Gold flakes appear to "glow", and will maintain this glow no matter how the pan is tilted. If the gold color disappears when you tilt the pan, it is probably not gold.
 
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