People from around the world visit Tucson every year to participate in the Tucson, Gem, Mineral and Fossil Showcase, a conglomeration of dozens of separate shows in more than 40 locations.

As part of the largest show of its kind in the U.S., the Gem and Mineral Show at the Tucson Convention Center focuses on materials from Arizona this year in honor of the state's centennial celebrations.

Supporters and organizers say tens of thousands of people come to Tucson for the events, contributing millions to the local economy.

Jane Roxbury, director of convention services for the Metropolitan Tucson Convention and Visitors Bureau, and Paul Harter, chair of the Tucson Gem and Mineral Show, join Arizona Illustrated to discuss the Gem Show's impact and its offerings this year.

The Gem, Mineral and Fossil Showcase officially gets underway Saturday, Jan. 28 and will last two weeks.

The 58th annual Tucson Gem and Mineral Show at the convention center will run Feb. 9-12.