Ezekiel 1:22

And a likeness is over the heads of the living creatures of an expanse, as the colour of the fearful ice, stretched out over their heads from above.

Ezekiel 10:1

And I look, and lo, on the expanse that is above the head of the cherubs, as a sapphire stone, as the appearance of the likeness of a throne, He hath been seen over them.

Ezekiel 1:26

And above the expanse that is over their head, as an appearance of a sapphire stone, is the likeness of a throne, and on the likeness of the throne a likeness, as the appearance of man upon it from above.

Revelation 4:6

and before the throne is a sea of glass like to crystal, and in the midst of the throne, and round the throne, are four living creatures, full of eyes before and behind;

Exodus 24:10

and they see the God of Israel, and under His feet is as the white work of the sapphire, and as the substance of the heavens for purity;

Job 37:22

From the golden north it cometh, Beside God is fearful honour.

Revelation 4:3

and He who is sitting was in sight like a stone, jasper and sardine: and a rainbow was round the throne in sight like an emerald.

Revelation 21:11

having the glory of God, and her light is like a stone most precious, as a jasper stone 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 that is over their head, as an appearance of a sapphire stone, is the likeness of a throne, and on the likeness of the throne a likeness, as the appearance of man upon it from above.
Ezekiel 10:1
And I look, and lo, on the expanse that is above the head of the cherubs, as a sapphire stone, as the appearance of the likeness of a throne, He hath been seen over them.
Exodus 24:10
and they see the God of Israel, and under His feet is as the white work of the sapphire, and as the substance of the heavens for purity;
Job 37:22
From the golden north it cometh, Beside God is fearful honour.
Revelation 4:3
and He who is sitting was in sight like a stone, jasper and sardine: and a rainbow was round the throne in sight like an emerald.
Revelation 21:11
having the glory of God, and her light is like a stone most precious, as a jasper stone clear as crystal,