A complete raindow around the sun is called a 'Rand's Rainbow. The pictures below are of a 'Circumhorizontal Arc'. These don't ring the sun but look more like a very wide upside-down rainbow. The pics don't do it justice - it was very vivid! These were taken 06-03-06, Spokane WA, looking south.
This will be a killer for slow connections (I did shrink these quite a bit) but here goes...
Wow, absolutely beautiful! :-)
Looks like daytime aurora borealuses! (sp?)
“Rand’s Rainbow”—thanks! Love to see these IRL too, wow.