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 ...

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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THE Mt Gravatt Lapidary Society’s annual gem show will be a shining example of the awe-inspiring work the members do. The show will be held on Saturday, May 26. President Tina Horton said the ...

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 ...