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!
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.