'Glass' in the Bible

“Gold or glass cannot equal it,Nor can it be exchanged for articles of fine gold.

and before the throne there was something like a sea of glass, like crystal; and in the center and around the throne, four living creatures full of eyes in front and behind.

And I saw something like a sea of glass mixed with fire, and those who had been victorious over the beast and his image and the number of his name, standing on the sea of glass, holding harps of God.

The material of the wall was jasper; and the city was pure gold, like clear glass.

And the twelve gates were twelve pearls; each one of the gates was a single pearl. And the street of the city was pure gold, like transparent glass.