the gold bearing rocks? I have been unable to locate the answer, although I remember my geology prof mentioning the gem stones and it was even on one pop quiz. The gem stones only appeared wherever the gold was, I remember that and that the miners would keep them because they were pretty, but few ever were made into anything. I seem to remember something about some being on display in the Colorado Museum of Mining, but haven’t received an answer to my inquiry there, so I’m hoping someone here has the answer. Thanks!