Yes, quinoa is gluten-free. I have tried and like it. It is less commonly available in stores near me and is more expensive that other grains. Some upsides are higher and more "complete" protein content and very compact. As a test, I cooked some in a Heineken keg-pot, boiling until my small stove went out and setting the can in a cozy for about 15 minutes. It is probably worthwhile to Google other grains that may be gluten-free.

CM