Then they pick up a forest map and see that you can dig crystals here. Crystal Park's two paved parking lots each have a capacity of 40 to 50 vehicles, Foster said. The crystals found at Crystal Park can be clear, cloudy, white, gray or purple. They can be smaller than your little finger or up to several inches in diameter. Gray, purple and other colors are caused by minerals within the quartz.
Single crystals are most common at Crystal Park.
But they can be found in pairs or clusters. Most of the crystals have little value other than as collector's items, said Bill Sherwood, a member of the Butte Mineral and Gem Club, which worked with the Forest Service to create Crystal Park as a public recreation site. I knew a guy who found a scepter, a perfect purple one,'' said Sherwood. So they have value, if you find someone who really wants 'em. I've had people offer me money for my crystals.