The foundations of the wall of the city were adorned with all kings of precious stones. The first foundation-stone was jasper, the second sapphire, the third chalcedony, the fourth emerald,

And this was how I saw the horses in my vision: the riders wore breastplates the color of fire and of sapphire and of sulfur, and the heads of the horses were like the heads of lions, and out of their mouths came fire and smoke and sulfur.