Revelation 21:19

An Understandable Version (2005 edition)

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;

Cross References

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 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.