'Glass' in the Bible
And before the high seat there was, as it seemed, a clear sea of glass; and in the middle of the high seat, and round about it, four beasts full of eyes round about.
And so I saw the horses in the vision, and those who were seated on them, having breastplates of fire and glass and of burning stone: and the heads of the horses were as the heads of lions; and out of their mouths came fire and smoke and a smell of burning.
And I saw a sea which seemed like glass mixed with fire; and those who had overcome the beast and his image and the number of his name, were in their places by the sea of glass, with God's instruments of music in their hands.
Having the glory of God: and her light was like a stone of great price, a jasper stone, clear as glass:
And the building of its wall was of jasper, and the town was clear gold, clear as glass.
And the twelve doors were twelve pearls; every door was made of one pearl; and the street of the town was clear gold, as clear as glass.
And I saw a river of water of life, clear as glass, coming out of the high seat of God and of the Lamb,