A new study is claiming that all the gold on Earth may have been created by stellar collision-explosions. The conclusion seems to be a by-product of a gamma ray burst study trying to explain the origin of the "short" ones. Apparently as much as "10 moon masses" of heavy metals can be created in such an event. So maybe the stuff you're made of isn't from a supernova, but instead a collision no adjuster in the universe can give you an estimate for.