solid gold

informal Extremely valuable, worthy, or likely to bring success. That idea is solid gold, Terry. We're going to be rich! This franchise has been solid gold for the studio for nearly three decades, delivering massive financial hits year after year.

See also: gold, solid

See also:

gold rush
go gold
gold-plated
gold-plate
goldbrick
strike gold
gold mine
a gold mine
get a gold star
gold star

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