Look, I may be a pretty decent wordsmith, but I know when I'm beat.
There in the heavens was a perfect ring of glittering silver light. Suspended there, hanging in eternity burning argent and white and incarnadine. The horizons all shone twilight and it was barely noticeable next to the Majesty above. The glory, the miracle, the ephemeral eternal fire.
It was a gateway to the other side of the sky. I can't put words to that and convey anything meaningful.