Ezekiel 1:22

Over the heads of the living creatures there was the likeness of an expanse, shining like awe-inspiring crystal, spread out above their heads.

Ezekiel 10:1

Then I looked, and behold, on the expanse that was over the heads of the cherubim there appeared above them something like a sapphire, in appearance like a throne.

Ezekiel 1:26

And above the expanse over their heads there was the likeness of a throne, in appearance like sapphire; and seated above the likeness of a throne was a likeness with a human appearance.

Revelation 4:6

and before the throne there was as it were a sea of glass, like crystal. And around the throne, on each side of the throne, are four living creatures, full of eyes in front and behind:

Exodus 24:10

and they saw the God of Israel. There was under his feet as it were a pavement of sapphire stone, like the very heaven for clearness.

Job 37:22

Out of the north comes golden splendor; God is clothed with awesome majesty.

Revelation 4:3

And he who sat there had the appearance of jasper and carnelian, and around the throne was a rainbow that had the appearance of an emerald.

Revelation 21:11

having the glory of God, its radiance like a most rare jewel, like a 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.

Bible References

The likeness

Ezekiel 1:26
And above the expanse over their heads there was the likeness of a throne, in appearance like sapphire; and seated above the likeness of a throne was a likeness with a human appearance.
Ezekiel 10:1
Then I looked, and behold, on the expanse that was over the heads of the cherubim there appeared above them something like a sapphire, in appearance like a throne.
Exodus 24:10
and they saw the God of Israel. There was under his feet as it were a pavement of sapphire stone, like the very heaven for clearness.
Job 37:22
Out of the north comes golden splendor; God is clothed with awesome majesty.
Revelation 4:3
And he who sat there had the appearance of jasper and carnelian, and around the throne was a rainbow that had the appearance of an emerald.
Revelation 21:11
having the glory of God, its radiance like a most rare jewel, like a jasper, clear as crystal.

The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.