'Pearl' in the Bible

Who, when he had found one pearl of great price, went and sold all that he had, and bought it.

lading of gold, and silver, and precious stone, and pearl, and fine linen, and purple, and silk, and scarlet, and all thyine wood, and every vessel of ivory, and every vessel of most precious wood, and brass, and iron, and marble,

saying, Woe, woe, the great city, she that was arrayed in fine linen and purple and scarlet, and decked with gold and precious stone and pearl!

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.