'Crystal' in the Bible
No mention shall be made of coral or of crystal; for the possession of Wisdom is even above rubies or pearls.
Over the head of the [combined] living creature there was the likeness of a firmament, looking like the terrible and awesome [dazzling of shining] crystal or ice stretched across the expanse of sky over their heads.
And in front of the throne there was also what looked like a transparent glassy sea, as if of crystal. And around the throne, in the center at each side of the throne, were four living creatures (beings) who were full of eyes in front and behind [with intelligence as to what is before and at the rear of them].
Clothed in God's glory [in all its splendor and radiance]. The luster of it resembled a rare and most precious jewel, like jasper, shining clear as crystal.