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, ...
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 ...
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