Revelation 21:21

the twelve gates were twelve pearls; each single gate was of one pearl: and the street of the city was pure gold, as splendid as glass.

Revelation 21:18

the wall was built of jasper; and the city was of pure gold, as pure as glass.

Revelation 17:4

and the woman was arrayed in purple, and scarlet colour, and decked with gold and precious stone and pearls, having a golden cup in her hand, full of the abominable impurities of idolatry.

Revelation 22:2

in the midst of the area, surrounded by the river, was the tree of life, which had twelve fruit-seasons, yielding its fruit every month: and the leaves of the tree were for the healing of the nations.

Matthew 13:45-46

Again, the heavenly kingdom is like a merchant-man, who is in quest of curious pearls:

Revelation 18:16

crying, alas, alas, that great city, that was cloathed in fine linnen, purple, and scarlet: decked with gold, precious stones and pearls:

Revelation 21:11-12

it blaz'd with the glory of God: her luminary was like that of a brilliant, even like a jasper, as transparent as crystal.

Treasury of Scripture Knowledge

Summary

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.

Bible References

The twelve

Revelation 21:12
her walls were large and high; the gates were twelve; and at the gates twelve angels, with the names of the twelve tribes of the children of Israel inscrib'd thereon.
Revelation 17:4
and the woman was arrayed in purple, and scarlet colour, and decked with gold and precious stone and pearls, having a golden cup in her hand, full of the abominable impurities of idolatry.
Matthew 13:45
Again, the heavenly kingdom is like a merchant-man, who is in quest of curious pearls:

Pure

Revelation 21:18
the wall was built of jasper; and the city was of pure gold, as pure as glass.
Revelation 17:4
and the woman was arrayed in purple, and scarlet colour, and decked with gold and precious stone and pearls, having a golden cup in her hand, full of the abominable impurities of idolatry.
Revelation 18:16
crying, alas, alas, that great city, that was cloathed in fine linnen, purple, and scarlet: decked with gold, precious stones and pearls:
Revelation 22:2
in the midst of the area, surrounded by the river, was the tree of life, which had twelve fruit-seasons, yielding its fruit every month: and the leaves of the tree were for the healing of the nations.

As it

Revelation 21:11
it blaz'd with the glory of God: her luminary was like that of a brilliant, even like a jasper, as transparent as crystal.