In 1986, a man named Roy Whetstine walked into a rock show in Arizona with a collector's eye and a little bit of luck. Sorting through a Tupperware container of stones, he spotted one, about the size of a small potato, dull and a little scuffed up. The seller wasn't impressed with it either. "I'll tell you what," the seller said, "I'll let you have it for $10. It's not as pretty as the others." Roy said yes. He knew what he was looking at. When he cleaned it up and took it to