Ezekiel 1:22

There was spread out over the heads of the living beings what looked like a canopy, in outward appearance resembling ice,

Ezekiel 10:1

As I continued to watch, there on the expanse above the heads of the cherubim was a massive sapphire stone that resembled a throne in form and appearance.

Ezekiel 1:26

From above the canopy that was spread out over their heads, there appeared to be something reminiscent of a throne, resembling sapphire in form.

Revelation 4:6

In front of the throne was something like a sea of glass as clear as crystal. In the center of the throne and on each side of the throne were four living creatures full of eyes in front and in back.

Exodus 24:10

and saw the God of Israel. Under his feet was something like a pavement made of sapphire, as clear as the sky.

Job 37:22

From the north he brings gold; around God is awesome splendor.

Revelation 4:3

The person sitting there looked like jasper and carnelian, and there was a rainbow around the throne that looked like an emerald.

Revelation 21:11

The glory of God was its radiance, and its light was like a valuable gem, like jasper, as 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.

Bible References

The likeness

Ezekiel 1:26
From above the canopy that was spread out over their heads, there appeared to be something reminiscent of a throne, resembling sapphire in form.
Ezekiel 10:1
As I continued to watch, there on the expanse above the heads of the cherubim was a massive sapphire stone that resembled a throne in form and appearance.
Exodus 24:10
and saw the God of Israel. Under his feet was something like a pavement made of sapphire, as clear as the sky.
Job 37:22
From the north he brings gold; around God is awesome splendor.
Revelation 4:3
The person sitting there looked like jasper and carnelian, and there was a rainbow around the throne that looked like an emerald.
Revelation 21:11
The glory of God was its radiance, and its light was like a valuable gem, like jasper, as clear as crystal.

International Standard Version Copyright © 1996-2008 by the ISV Foundation.