Paul Black explained how Mount Diablo was formed by lava squirting “like toothpaste” through layers of rock while he polished a piece of Woodward Ranch Plume Agate. He was yelling. The decibels were ...

Those with an affinity for rocks will be both entertained and educated during Lapidary Day at the Lizzadro Museum of Lapidary Art in Oak Brook. The museum’s slate from 10 a.m. to 4 p.m. Nov. 8, ...

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, ...

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ANTIOCH — As he polished a piece of Woodward Ranch plume agate, Paul Black explained how Mount Diablo was formed by lava squirting “like toothpaste” through layers of rock. He was yelling. The ...