And there was a likeness over the heads of the living one - an expanse, like terrible crystal to look upon, -stretched forth over their heads above.

and, before the throne, is as a glassy sea, like unto crystal. And, in the midst of the throne, and around the throne, are four living creatures full of eyes, before and behind;

having the glory of God, - her lustre, like unto a stone most precious, as a jasper stone, shining as crystal;