KJV - 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.
ASV - Then I looked, and behold, in the firmament that was over the head of the cherubim there appeared above them as it were a sapphire stone, as the appearance of the likeness of a throne.
BBE - Then looking, I saw that on the arch which was over the head of the winged ones there was seen over them what seemed like a sapphire stone, having the form of a king's seat.
WEB - Then I looked, and see, in the expanse that was over the head of the cherubim there appeared above them as it were a sapphire{or, lapis lazuli} stone, as the appearance of the likeness of a throne.
YLT - And I look, and lo, on the expanse that `is' above the head of the cherubs, as a sapphire stone, as the appearance of the likeness of a throne, He hath been seen over them.