Matthew 7:6
Give not that which is holy to the dogs, neither cast ye your pearls before swine, lest these trample them under foot, and those turn upon you and tear you.
Matthew 13:45-46
Again, the heavenly kingdom is like a merchant-man, who is in quest of curious pearls:
1 Timothy 2:9
and that the women be decent in their apparel, adorned with modesty and reserve, not with broider'd hair, or gold, or pearls, or costly array;
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 18:12
their gold, and silver, precious stones, and pearls, fine linnen, and purple, their silk, scarlet, and all sort of citron wood, their various vessels of ivory, and of precious wood, of brass, iron, and marble:
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.