Revelation 4:6
In front of the throne was what looked like a sea of glass, like crystal. Around the throne, in the middle of each side, were four animals covered with eyes in front and behind.
Revelation 4:3
The one who was seated on it looked like jasper and sardius, and around the throne was a halo of the color of an emerald.
Revelation 21:11
in all the glory of God. It shone with a radiance like that of some very precious stone, like jasper, clear as crystal.
Treasury of Scripture Knowledge
Summary
And the likeness of the firmament upon the heads of the living creature was as the colour of the terrible crystal, stretched forth over their heads above.
The likeness
Bible References
The likeness
Revelation 4:3
The one who was seated on it looked like jasper and sardius, and around the throne was a halo of the color of an emerald.
Revelation 21:11
in all the glory of God. It shone with a radiance like that of some very precious stone, like jasper, clear as crystal.