..but people are still digging up antique marbles. I went out to Boroslavy Canyon just outside the Mojave Desert ghost town of Trona,Ca this morning and dug up a pristine Akro Agate oxblood marble. It's summer in the desert which means I dig till I find one marble then jump in my 4 wheel drive truck and turn on the air conditioner. I dress to the hilt for the desert. Wear loose-fitting cotton clothing,hat and gloves. Spit on the ground and it bursts into steam. My only friend at the site where I dig is a giant chuckwalla lizard. I first saw him last spring when he was teensy. He's grown up since then. About three feet long. Every day during the summer when I dig up a marble I'm courting death from heatstroke. But I know there are thousands more marbles buried out there. It's like opening a new Christmas present every day. So who could stop? Just me and the chuckwalla in a ravine at the bottom of a canyon surrounded by ancient volcanic lava flows in 118F to 130F desert heat. Treasure has different meanings according to situation.