3 And the one who sat there had the appearance of jasper and ruby. A rainbow that shone like an emerald encircled the throne.

Read Revelation 4:3 Using Other Translations

And he that sat was to look upon like a jasper and a sardine stone: and there was a rainbow round about the throne, in sight like unto an emerald.
And he who sat there had the appearance of jasper and carnelian, and around the throne was a rainbow that had the appearance of an emerald.
The one sitting on the throne was as brilliant as gemstones—like jasper and carnelian. And the glow of an emerald circled his throne like a rainbow.