This spiral can be built in the real world, and it will stand by itself quite well. You cannot see the base that I built for it, as I have not had the time to work out the math for that part and re-render, but it should not prove too complicated.
I'm not terribly happy with the way the blue looks in this image, but I wanted it to look as close to the real model I built as possible, and that is the color I used...
(Many thanks to Steve Bliss for providing a valuable insight, and to all the people who have contributed to the parts libraries available on the 'net.)