“pearls” in the Douay-Rheims Bible

The word pearls appears 7 times in the Douay-Rheims Bible. The first 7 matching verses are shown below.

Matthew 7:6 Give not that which is holy to dogs; neither cast ye your pearls before swine, lest perhaps they trample them under their feet, and turning upon you, they tear you.
Matthew 13:45 Again the kingdom of heaven is like to a merchant seeking good pearls.
1 Timothy 2:9 In like manner, women also in decent apparel: adorning themselves with modesty and sobriety, not with plaited hair, or gold, or pearls, or costly attire:
Apocalypse 17:4 And the woman was clothed round about with purple and scarlet, and gilt with gold and precious stones and pearls, having a golden cup in her hand, full of the abomination and filthiness of her fornication.
Apocalypse 18:12 Merchandise of gold and silver and precious stones: and of pearls and fine linen and purple and silk and scarlet: and all thyine wood: and all manner of vessels of ivory: and all manner of vessels of precious stone and of brass and of iron and of marble:
Apocalypse 18:16 And saying: Alas! alas! that great city, which was clothed with fine linen and purple and scarlet and was gilt with gold and precious stones and pearls.
Apocalypse 21:21 And the twelve gates are twelve pearls, one to each: and every several gate was of one several pearl. And the street of the city was pure gold, as it were, transparent glass.