Just got this one. Hallmark is interesting, but not one I can pin down. Very chunky at 45 grams. Looks like Opal, Red Coral, Charoite and just not sure about the light green one. Any thoughts appreciated!
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That appears to be from Broken Arrow Mine in Nevada. I am not 100% positive though.
I forgot to mention, that’s a very interesting makers mark but maybe with the id of the turquoise, it might help.