platinum, adj. — Green’s Dictionary of Slang

platinum adj.

[on pattern of diamond adj.; also fig. use of record industry go platinum, to sell one million copies of an album]

(US) excellent, special.

2001

OnLine Dict. of Playground Sl. 🌐 platinum n. beautiful, special, or just great.

go platinum (v.)

to reach an extreme of importance, positive or negative.

1988

T. Harris Silence of the Lambs (1991) 341: Lecter’s gone platinum — he’s at the top of everybody’s Most Wanted list.