At JCK, you'll find 925 Silver Jewelry the world's biggest names in jewelry, gems and watches. This is America's premier jewelry show and should not be missed. Tucson Gem, Mineral & Fossil The Tucson show is actually Remy Human Hair a combination of many different shows over a 2 week period and is held in America's Tucson, Arizona. It attracts over 55,000 visitors Engagement Rings and is one of the world's.