'Halo' in the Bible

Now upward, from that which appeared to be His waist, I saw something like glowing metal that looked like it was filled with fire all around it; and downward, from that which appeared to be His waist, I saw something like fire; and there was a brightness and a remarkable radiance [like a halo] around Him.

And He who sat there appeared like [the crystalline sparkle of] a jasper stone and [the fiery redness of] a sardius stone, and encircling the throne there was a rainbow that looked like [the color of an] emerald.

Then I saw another mighty angel coming down from heaven, clothed in a cloud, with a rainbow (halo) over his head; and his face was like the sun, and his feet (legs) were like columns of fire;