Then why is there c14 in diamond?But they didn't exist back then.
We've learned how to make a diamond in 2 weeks in a lab.
But nature took millions of years.
How exactly do you KNOW that it takes millions of years for diamonds to form?
If a process can be done in a lab... then why not in nature?
Because a lab exists does not mean that a lab is the only place a process can be performed.
If coal takes a certain temperature/pressure and lack of oxygen... why can that process not have occurred just post flood?