'Pearls' in the Bible

Give not that which is holy to the dogs, nor cast your pearls before the swine, lest they trample them with their feet, and turning round rend you.

Again, the kingdom of the heavens is like a merchant seeking beautiful pearls;

In like manner also that the women in decent deportment and dress adorn themselves with modesty and discretion, not with plaited hair and gold, or pearls, or costly clothing,

And the woman was clothed in purple and scarlet, and had ornaments of gold and precious stones and pearls, having a golden cup in her hand full of abominations and the unclean things of her fornication;

saying, Woe, woe, the great city, which was clothed with fine linen and purple and scarlet, and had ornaments of gold and precious stones and pearls!

And the twelve gates, twelve pearls; each one of the gates, respectively, was of one pearl; and the street of the city pure gold, as transparent glass.