King James Version
Then I looked, and, behold, in the firmament that was above the head of the cherubims there appeared over them as it were a sapphire stone, as the appearance of the likeness of a throne.English Standard Version
Then I looked, and behold, on the expanse that was over the heads of the cherubim there appeared above them something like a sapphire, in appearance like a throne.New International Version
I looked, and I saw the likeness of a throne of sapphire above the expanse that was over the heads of the cherubim.