And the likeness over the heads of the living creatures was as a firmament, as the appearance of crystal, spread out over their wings above.

and before the throne [was something] like a sea of glass, similar to crystal. And in the midst of the throne, and around the throne, were four living beings full of eyes in front and in back.

having the glory of God. Its radiance was like a most precious stone, like a jasper stone, [clear as] crystal,

And he showed me a pure river of water of life, bright as crystal, proceeding from the throne of God and of the Lamb.