Revelation 21:12-13 & 21 
(12) And had a wall great and high, and had twelve gates, and at the gates twelve angels, and names written thereon, which are the names of the twelve tribes of the children of Israel:  (13)  On the east three gates; on the north three gates; on the south three gates; and on the west three gates. (21) And the twelve gates were twelve pearls; every several gate was of one pearl: and the street of the city was pure gold, as it were transparent glass.

Revelation 21:9-11, 18, & 22-23 
(9) And there came unto me one of the seven angels which had the seven vials full of the seven last plagues, and talked with me, saying, Come hither, I will shew thee the bride, the Lamb's wife.  (10)  And he carried me away in the spirit to a great and high mountain, and shewed me that great city, the holy Jerusalem, descending out of heaven from God,  (11)  Having the glory of God: and her light was like unto a stone most precious, even like a jasper stone, clear as crystal; (18) And the building of the wall of it was of jasper: and the city was pure gold, like unto clear glass. (22) And I saw no temple therein: for the Lord God Almighty and the Lamb are the temple of it.  (23)  And the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof.

Revelation 21:1-2 
(1) And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea.  (2)  And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband.