Revelation 21:9-19

9 Then one of the seven angels who had the seven bowls full of the seven last plagues came and said to me, "Come, I will show you the bride, the wife of the Lamb."
10 And in the spirit he carried me away to a great, high mountain and showed me the holy city Jerusalem coming down out of heaven from God.
11 It has the glory of God and a radiance like a very rare jewel, like jasper, clear as crystal.
12 It has a great, high wall with twelve gates, and at the gates twelve angels, and on the gates are inscribed the names of the twelve tribes of the Israelites;
13 on the east three gates, on the north three gates, on the south three gates, and on the west three gates.
14 And the wall of the city has twelve foundations, and on them are the twelve names of the twelve apostles of the Lamb.
15 The angel who talked to me had a measuring rod of gold to measure the city and its gates and walls.
16 The city lies foursquare, its length the same as its width; and he measured the city with his rod, fifteen hundred miles; its length and width and height are equal.
17 He also measured its wall, one hundred forty-four cubits by human measurement, which the angel was using.
18 The wall is built of jasper, while the city is pure gold, clear as glass.
19 The foundations of the wall of the city are adorned with every jewel; the first was jasper, the second sapphire, the third agate, the fourth emerald,