BISMARCK, N.D. - Kids from across the state were learning to take nothing for granite at the 44th Gem and Mineral Show.
The shows headline is Rainbows in the Dark, a showcase of fluorescent rocks, minerals and toys from around the world.
"He was really good with the kids, he was really entertaining. I learned something new today, I didn't know that the stamps, postage stamps were fluorescent," said Lindsey Brummer, a Menoken Elementary fifth and sixth grade teacher.
The collector, Raymond Oliger, has been building his collection for about 35 years, even donating the rocks to be displayed by the Heritage Center.
The show offered free admission to schools to get more people in the door Friday.
"The hope is that they'll drag there parents here tomorrow, and they'll be able to get some more things to show their parents, and expose them to it," said Kim Schultz, a Will-Moore School fifth grade teacher.
The event brought together collections of rocks from around the world. Giving teachers easy access to a tactile teaching tool.
"We've been talking about what geology is and the different types of rocks, and I've showed them some samples and we've looked at some things online, and now they have a chance to actually see it for real," said Schultz.
Dozens of students from across the state showed up for the event Friday.
The show continues Saturday from 9 a.m. to 5 p.m. at the Amvets Post #9.