Naked (hulless) barley as sold is a viable seed. If you soak it it will eventually sprout. I usually soak it about 24 hours, drain and store in the refrigerator for up to a week. To cook the soaked grain you only have to add a couple of tablespoons of water to a cereal bowl with the barley, cover with a saran wrap or other non-metallic lid, and heat in a microwave (high) for about a minute.
Originally I got my first barley from a nice mom and pop business in Montana. Their products included a beautiful purple variety. When I looked for them just now, I found a site at westerntrailsfood.com, which I think are the same people.