Certifying a piece of rock as 'natural' ?

Denalihighway

Hi,

Sorry in advance for the unusual thread.

I'm wondering how a person might go about having a geologist (or somebody similar) to certify that a stone / rock is natural, and untouched/unaltered by human hand?

I'm assuming there must a way but not sure where to start - any ideas?

Thanks

slowburner

A photo here or in the archaeology forum would be a useful way to start

Denalihighway

Thanks for that - I'm not trying to be awkward here but I can't really display a photo for a number of reasons. It's an unusually shaped rock found on a beach basically. Certainly completely natural - but hard to believe it's not I imagine