Okay kiddo, so a Shelby Gem Factory is a special kind of place where people go to find really pretty rocks and minerals. These rocks and minerals are called gems, and they come from deep inside the earth.
Once the people who work at the Shelby Gem Factory find the gems, they take them and clean them up so they're shiny and sparkly. Then, they put them in special boxes and bags so people can buy them and take them home to keep as treasures.
But here's the coolest part: You can actually go to the Shelby Gem Factory yourself and look for gems too! They have a big area outside where you can dig around and find your own rocks and gems to take home. It's called "gem mining" and it's so much fun!
So if you ever want to find some cool rocks and gems, just go to the Shelby Gem Factory and start digging around!