I went to the Big-E for their Gem and Mineral Show and was absolutely amazed!! The mineral dealers are from around the world and they bring one amazing piece after another. You can buy jewelry, gemstones, minerals as well as sit in on a speaker to hear about how exactly minerals are found and the lengths they go to obtain them. When I was there a mineral dealer was speaking about caving all over the world and had a wonderful slide show. Even though it is a 3 day show, you will want to get there early and park. If you have kids, they can gold-pan a bag of dirt and see what they found, there is a table there where they can buy toys, or they can choose their own geode and have it cracked open to see what the crystals look like inside. The dealers there will gladly tell you where their minerals are from and answer any question you may have. There are hourly free giveaways, too. I have gone a few years in a row and will absolutely continue to go!!