The Mojave Nugget is the largest known gold nugget ever found in California. The nugget weighs 156 troy ounces (4.9 kg).

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Previously:

Handling gold leaves - GIF
Making a 1-kilo gold chain - video
Weighing gold at the Federal Reserve Bank of NY - photo
Gold prospecting dry washer - video
1935 Sumpter Valley gold dredge - photo