'Crystal' in the Bible

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

that has the glory of God. Its radiance [is] like a precious stone, [something] like a jasper stone, shining like crystal.

And he showed me the river of the water of life, clear as crystal, coming out from the throne of God and of the Lamb