The oldest thing ever found on Earth has been discovered by scientists, and it is more than two billion years older than our planet.
Tiny specks of stardust, dating back seven billion years, have been uncovered in a meteorite which landed in Victoria, Australia, in 1969.
Can’t recall who did “We Are Stardust” (Hawkwind?) but they’re generally right. Every atom from iron on up is made inside a nova or supernova, no? And everything above H is made in a star? So pretty much everything must be old enough to have been through one cycle of star and boom.