I'd found Spokane Bar Sapphire Mine by seeing a raw stone from this mine that was found by another customer who had the raw sapphire (quite large) set into a custom piece of beautiful jewelry. We purchased a bag of gravel from the Mother Lode mine and after our "mining" lesson got to work. Our teenage daughter's eyes were great - she found all but one or two of the sapphires we found in our bag. It was so cold and windy the day we visited, but we were determined to work through our entire bag before we left. In the end, we had seven larger sapphires (3 carats or so and up with one stone being over 6 carats rough) and about 15 smaller sapphires. We found a local gem cutter who will be cutting and polishing our top seven stones. Not only was this fun and entertaining, it's a beautiful drive from Helena. I can't wait to see our cut and polished stones! I'd recommend Spokane Bar Sapphire Mine and would also recommend purchasing either of the two more expensive bags (which come from mines that have a higher yield of larger sapphires).