I recently purchased a bag-lot of nuggets at an estate sale. I’m sure they’re not high-quality stones, but thought they might at least be stabilized, color-enhanced but possibly real turquoise? I’ve tried a Q-tip and acetone and no color came off. The deep veins have a lot of sawdust-type residue (perhaps a soft-stone polishing/tumbling media?) Lightly scratching with an X-acto blade scrapes off a powdery dust but doesn’t seem to change the color of the remaining stone. When I look at through a loupe the color seems slightly grainy, with stronger pockets of color in some scratches and depressions which leads me think that there is some dyeing involved. Any ideas? I only have $1 in the lot so it’s not a loss if they’re nothing.
Thank you for any suggestions!