Rev.4.6and before the throne there was as it were a sea of glass, crystal. And around the throne, on each side of the throne, are four living creatures, full of eyes in front and behind:
Rev.15.2And I saw what appeared to be a sea of glass mingled with fire—and also those who had conquered the beast and its image and the number of its name, standing beside the sea of glass with harps of God in their hands.
Rev.21.18The wall was built of jasper, while the city was pure gold, clear as glass.
Rev.21.21And the twelve gates were twelve pearls, each of the gates made of a single pearl, and the street of the city was pure gold, transparent as glass.