How do you verify the validity of crystal healing once and for all?
Imagine someone who knows nothing about crystals and gemstones, this is his first time getting into this world and he's skeptical. He wants to know whether crystals are legit, whether there's sth special about them that distinguishes them from dead ordinary matter. He knows that modern science and culture labels crystals as placebo or woo woo **. But he's open minded and he's willing to do what needs to be done to verify beyond doubt whether crystals are legit or not.
What is this person supposed to do to verify this?