Also before the throne there was what looked like a sea of glass, clear as crystal. In the center, around the throne, were four living creatures, and they were covered with eyes, in front and in back.
NIV
And in front of the throne there was also what looked like a transparent glassy sea, as if of crystal. And around the throne, in the center at each side of the throne, were four living creatures (beings) who were full of eyes in front and behind [with intelligence as to what is before and at the rear of them]. [Ezek. 1:5, 18.]AMP
And before the throne there was a sea of glass like unto crystal: and in the midst of the throne, and round about the throne, were four beasts full of eyes before and behind.
KJV
The twelve gates were twelve pearls, each gate made of a single pearl. The great street of the city was of gold, as pure as transparent glass.
NIV
And the twelve gates were twelve pearls, each separate gate being built of one solid pearl. And the main street (the broadway) of the city was of gold as pure and translucent as glass.
AMP
And the twelve gates were twelve pearls: every several gate was of one pearl: and the street of the city was pure gold, as it were transparent glass.
KJV