This can be stated in active form. Alternate translation: "Someone had built the wall with jasper and the city with pure gold" (See: [[rc://en/ta/man/translate/figs-activepassive]])
These are valuable stones. Jasper may have been clear like glass or crystal, and carnelian may have been red. Emeralds are green. See how you translated these in [Revelation 4:3](../04/03.md). (See: [[rc://en/ta/man/translate/translate-unknown]])