14 The city's wall was built on twelve foundation stones, on which were written the names of the twelve apostles of the Lamb.
15 The angel who spoke to me had a gold measuring rod to measure the city, its gates, and its wall.
16 The city was perfectly square, as wide as it was long. The angel measured the city with his measuring rod: it was 2,400 kilometres long and was as wide and as high as it was long.
17 The angel also measured the wall, and it was sixty metres high, according to the standard unit of measure which he was using.
18 The wall was made of jasper, and the city itself was made of pure gold, as clear as glass.
19 The foundation stones of the city wall were adorned with all kinds of precious stones. The first foundation stone was jasper, the second sapphire, the third agate, the fourth emerald,
20 the fifth onyx, the sixth carnelian, the seventh yellow quartz, the eighth beryl, the ninth topaz, the tenth chalcedony, the eleventh turquoise, the twelfth amethyst.