John 1:18

No one has ever seen God [i.e., His full splendor], but God, the only conceived [and eventually born Son], who is at the Father's side, has shown us who He is.

Revelation 4:3

And He who was seated [on it] appeared like jasper [i.e., possibly diamond. See 21:11] and carnelian [i.e., possibly a brilliant red stone], and there was a rainbow, resembling an emerald, surrounding the throne.

Matthew 17:2

There His whole appearance was [miraculously] changed in front of them. His face shone [as brilliantly] as the sun and His clothing became as bright as light.

1 Timothy 6:16

He alone possesses immortality [Note: That is, only God possesses an eternal existence, with neither beginning nor ending. See John 5:26], and lives in unapproachable light. No one has seen Him, or can see Him. May there be honor and never ending power to Him. May it be so.

1 John 4:12

No person has gazed upon God [at any time]; [but] if we love one another, God [continually] lives in our hearts, and His love is made complete within us.

John 6:46

[I am] not [saying] that anyone has [ever] seen the Father, except the One who is from God [i.e., Jesus] has seen Him.

John 14:9

Jesus replied to him, "Have I been with you men all this time, and [still] you do not know me, Philip? The person who has seen me, has [also] seen the Father. How can you say, 'Show us the Father'?

Revelation 1:16

And He had seven stars in His right hand [See verse 20], and a sharp, double-edged sword came out of His mouth. And His face [shone] as the sun, shining in [all] its brilliance.

Revelation 21:11

It had the splendor of God [shining from it], and was as brilliant as a very precious stone, as crystal-clear as jasper.

Revelation 21:18-23

The material for the city's wall was jasper, and the city [itself] was made of pure gold, as clear as glass.

Treasury of Scripture Knowledge

Summary

And they saw the God of Israel: and there was under his feet as it were a paved work of a sapphire stone, and as it were the body of heaven in his clearness.

Of a sapphire stone

Bible References

Saw

John 1:18
No one has ever seen God [i.e., His full splendor], but God, the only conceived [and eventually born Son], who is at the Father's side, has shown us who He is.
John 14:9
Jesus replied to him, "Have I been with you men all this time, and [still] you do not know me, Philip? The person who has seen me, has [also] seen the Father. How can you say, 'Show us the Father'?
1 Timothy 6:16
He alone possesses immortality [Note: That is, only God possesses an eternal existence, with neither beginning nor ending. See John 5:26], and lives in unapproachable light. No one has seen Him, or can see Him. May there be honor and never ending power to Him. May it be so.
1 John 4:12
No person has gazed upon God [at any time]; [but] if we love one another, God [continually] lives in our hearts, and His love is made complete within us.

Of a sapphire stone

Revelation 4:3
And He who was seated [on it] appeared like jasper [i.e., possibly diamond. See 21:11] and carnelian [i.e., possibly a brilliant red stone], and there was a rainbow, resembling an emerald, surrounding the throne.
Revelation 21:19
The foundation of the city's wall was decorated with all kinds of precious stones [Note: Not all of the following stones listed can be accurately identified today]. The first foundation stone was jasper [i.e., a bluish-colored stone]; the second was sapphire; the third was chalcedony [i.e., a translucent quartz of pale blue or gray]; the fourth was emerald;

In his clearness

Matthew 17:2
There His whole appearance was [miraculously] changed in front of them. His face shone [as brilliantly] as the sun and His clothing became as bright as light.
Revelation 1:16
And He had seven stars in His right hand [See verse 20], and a sharp, double-edged sword came out of His mouth. And His face [shone] as the sun, shining in [all] its brilliance.
Revelation 21:11
It had the splendor of God [shining from it], and was as brilliant as a very precious stone, as crystal-clear as jasper.