Revelation 4:6
6 and before the throne there was sas it were a sea of glass, like crystal.
And around the throne, on each side of the throne, are tfour living creatures, ufull of eyes in front and behind:
Revelation 21:18
18 The wall was built of ljasper, while the city was pure gold, like lclear glass.
Revelation 21:21
21 And the twelve gates were twelve pearls, each of the gates made of a single pearl, and nthe street of the city was pure gold, like transparent glass.