Boulders of petrified wood, jade and quartz — each of them weighing about a ton — sparkle in the sun outside the Lizzadro Museum of Lapidary Art in Oak Brook. Tucked away in a suburban office park, ...

Picking through rocks is like rooting through a box of chocolates. You open it up, and you never know what you're going to find, said Phill Garnett, a retired school administrator who runs a rock shop ...