A gold digger -- yes, really -- made quite the discovery while out in the Butte County foothills this summer. And we're just now learning about it."The Butte Nugget," as it's called, is about 80 to 90 percent gold and weighs more than 5 pounds. The person who found it was actively searching for gold at the time and has chosen to remain anonymous, according to a spokesman from Kagin's Inc., a numismatist firm and auction house in Tiburon.The golden nugget is said to be worth about $350,000.The finder came across the nugget in July. Kagin's has confirmed the provenance of the piece, company spokesman David McCarthy said Tuesday.Kagin's is handling the sale of the nugget for the finder. This will be done in a private sale, not a public auction.The huge piece also will be displayed at the San Francisco Fall Antique Show, which starts Thursday with a Gold Rush theme.Officials wouldn't say exactly when in June the finder discovered the monster nugget, or exactly where it happened. It was on public land, they confirmed.

A gold digger -- yes, really -- made quite the discovery while out in the Butte County foothills this summer. And we're just now learning about it.

"The Butte Nugget," as it's called, is about 80 to 90 percent gold and weighs more than 5 pounds. The person who found it was actively searching for gold at the time and has chosen to remain anonymous, according to a spokesman from Kagin's Inc., a numismatist firm and auction house in Tiburon.


The golden nugget is said to be worth about $350,000.

The finder came across the nugget in July. Kagin's has confirmed the provenance of the piece, company spokesman David McCarthy said Tuesday.

Kagin's is handling the sale of the nugget for the finder. This will be done in a private sale, not a public auction.

The huge piece also will be displayed at the San Francisco Fall Antique Show, which starts Thursday with a Gold Rush theme.

Officials wouldn't say exactly when in June the finder discovered the monster nugget, or exactly where it happened. It was on public land, they confirmed.