During the last show they showed the crystals dissolving in the ocean. Some could have been processed in a desalination plant and the water drank by unsuspecting inhumans. The water would taste fantastic to them because the inhuman part wants the crystals for the change. I have such a character made. Her name is Lady Nako with a life time of training as a kendo and Martial arts student the crystals inhance all over strength and dexterity and slight increase to regeneration basically a superior human in every way. And she could have an adamantium katana and arm band bracers.