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Is 456 carats as heavy as a US Penny?

It's about forty times as heavy as a US Penny
The weight of a US Penny is about 12 carats.
(United States) (formally one-cent coin) (Union shield design, 2010-present)
The weight of a United States penny is 12 carats. According to a 2010 report by the United States Mint, the cost of manufacturing and distributing a penny is $0.0179 — more than its face-value.
There's more! See other comparisons to 456 carats...