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.

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;