GOD'S WORD® Translation
The one sitting there looked like gray quartz and red quartz. There was a rainbow around the throne which looked like an emerald.

American Standard Version
and he that sat was to look upon like a jasper stone and a sardius: and there was a rainbow round about the throne, like an emerald to look upon.

Berean Study Bible
The One seated there looked like jasper and carnelian, and a rainbow that gleamed like an emerald encircled the throne.

Douay-Rheims Bible
And he that sat, was to the sight like the jasper and the sardine stone; and there was a rainbow round about the throne, in sight like unto an emerald.

English Revised Version
and he that sat was to look upon like a jasper stone and a sardius: and there was a rainbow round about the throne, like an emerald to look upon.

King James Bible
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.

World English Bible
that looked like a jasper stone and a sardius. There was a rainbow around the throne, like an emerald to look at.

Young's Literal Translation
and He who is sitting was in sight like a stone, jasper and sardine: and a rainbow was round the throne in sight like an emerald.

Revelation 4:3 Additional Translations ...