Ezekiel 1:22

And there was the likeness of an expanse over the heads of the living creature, as the look of the terrible crystal, stretched forth over their heads above.

Ezekiel 10:1

And I looked, and behold, in the expanse that was over the head of the cherubim there appeared above them as it were a sapphire stone, as the appearance of the likeness of a throne.

Ezekiel 1:26

And above the expanse that was over their heads was the likeness of a throne, as the appearance of a sapphire stone; and upon the likeness of the throne was a likeness as the appearance of a man above upon it.

Revelation 4:6

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

Exodus 24:10

and they saw the God of Israel; and there was under his feet as it were work of transparent sapphire, and as it were the form of heaven for clearness.

Job 37:22

From the north cometh gold; with +God is terrible majesty.

Revelation 4:3

and he that was sitting like in appearance to a stone of jasper and a sardius, and a rainbow round the throne like in appearance to an emerald.

Revelation 21:11

having the glory of God. Her shining was like a most precious stone, as a crystal-like jasper stone;

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 was over their heads was the likeness of a throne, as the appearance of a sapphire stone; and upon the likeness of the throne was a likeness as the appearance of a man above upon it.
Ezekiel 10:1
And I looked, and behold, in the expanse that was over the head of the cherubim there appeared above them as it were a sapphire stone, as the appearance of the likeness of a throne.
Exodus 24:10
and they saw the God of Israel; and there was under his feet as it were work of transparent sapphire, and as it were the form of heaven for clearness.
Job 37:22
From the north cometh gold; with +God is terrible majesty.
Revelation 4:3
and he that was sitting like in appearance to a stone of jasper and a sardius, and a rainbow round the throne like in appearance to an emerald.
Revelation 21:11
having the glory of God. Her shining was like a most precious stone, as a crystal-like jasper stone;