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SAN FRANCISCO (CNN)-

The term nugget doesn’t quite do it justice.

A 6-pound gold "nugget" found in Butte County sold for $400,000. Courtesy: Kagin's Inc.
A 6-pound gold “nugget” found in Butte County sold for $400,000.
Courtesy: Kagin’s Inc.

A more than 6-pound chunk of gold sold over the weekend for $400,000, according to the San Francisco Chronicle.

The nugget was found in Butte County this summer, by an anonymous person.

An anonymous Bay Area buyer snatched up the “Butte nugget” at the San Francisco Fall Antiques Show.

The huge hunk of bullion went on public display Thursday, piquing the interest of hundreds who flocked to the show to get a peek.

“Nuggets like this don’t come along every day,” said David McCarthy, the nugget’s appraiser. “I really didn’t believe that I would see a California nugget of this size unearthed during my lifetime.”

McCarthy told the Chronicle that the buyer is “a prominent Bay Area collector” who specializes in historical items.

A fitting specialty, given that his collection is now one for the history books.

And that’s a distinction that is worth its weight in gold.