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

Revelation 4:3
And he that sat, was to look upon like a jasper and a sardine stone; and a rainbow was round about the throne, like an emerald to look upon.
Revelation 21:11
Having the glory of God: her window was like the most precious stone, like a jasper stone,