Tucson Gem, Mineral, and Fossil show begins to day and runs for over two weeks at over 40 different individual shows. We went to opening day at one of the shows. People from all over the world. Bring cash, preferably new $100 bills. A lot of customers come with suitcases, the kind you put in the overhead bin of an airplane. Hours later they leave with these filled with goods. Towards the end of the day, I saw one weary person dragging two stuffed suitcases out the door. I typically make the rounds of the different shows to compare prices. Then I will purchase what seems to be a good price.  You can buy anything from a geode over six feet tall, dinosaurs, raw gold, and a few people get invited to exclusive shows open to truly high rollers. Appraisers in Tucson are busy checking the quality of jewels.   LuckySammyJewelry will stock up.