Evil-Lyn’s corodite crystal from the Super7 Filmation Masters of the Universe toy line.

Corodite crystal as it appeared in the Masters of the Universe Cartoon

Mined by the Widgets, the pink, crystalline Coridite was the most powerful mineral on Eternia. It could be used to create indestructible metals, power anything from lasers to reactors, or, when endowed with magic, give the bearer great strength. He-Man’s harness was fashioned from Coridite by the Sorceress. The Coridite armor added to He-Man’s already prodigious strength. A negative chemical reaction was caused when Coridite was exposed to the mineral Selanium.