User blog comment:Aptos/Gem Biology, Part One/@comment-26840812-20160221150913

They don't need to be Organical to be scientific. Hard Light is a thing IRL, Photons can be both Matter and Energy, whcih is the fun part about it.

Yes, Photons don interact with each other, but under the right circunstances they can, and eventually create :'hard light"

Gems could function as they create energy, or somekind of technological(Or for the sake of show simplicity Magic) way of emmanating light from the gemstone, and such light will ,thanks to such energy, contain photons that interact with each other, so when they finish regenerating it will create a physical form.

And Yes, Hard light is a thing