Title: Gemstones in the Bible
Content:  Pearl. Although not a gemstone in the strictest sense, we can apply the word "stone" in a broader context similar to that of coral. It is comparatively certain that pearl (Greek margarite, Vulg. margarita) was known among the Jews, at least after the time of Solomon, as it was among the Phoenicians. The exact etymology is uncertain, but the following have been suggested: ghbysh, which signified "crystal" (see above); phnynym, which Gesenius renders by "red coral"; dr, Esth., i, 6, which is translated in the Vulg. by lapis parius, "marble"; the Arabic dar also signifies "pearl", and therefore Furst also renders the Hebrew word. In the New Testament we find pearl mentioned in Matt., xiii, 45, 46; I Tim., ii, 9; etc. Pearl is a concretion consisting chiefly of lime carbonate found in several bivalve molluscs, but especially in avicula margaritifera. Generally, it has a whitish blue hue, sometimes showing a tinge of pink; but there are also yellow pearls. This gem was considered the most precious of all among the ancients, and was obtained from the Red Sea, the Indian Ocean, and the Persian Gulf.
Title: Pearl
Content:  The metaphor of a pearl appears in the longer Hymn of the Pearl, a poem respected for its high literary quality, and use of layered theological metaphor, found within one of the texts of Gnosticism. The Pearl of Great Price is a book of scripture in The Church of Jesus Christ of Latter-day Saints (LDS Church) and some other Latter Day Saint denominations.
Title: Pearl
Content:  In a Christian New Testament parable (Matthew 13:45–46), Jesus compared the Kingdom of Heaven to a "pearl of great price". "Again, the kingdom of heaven is like unto a merchant man, seeking goodly (fine) pearls: Who, when he had found one pearl of great price, went and sold all that he had, and bought it." The twelve gates of the New Jerusalem are reportedly each made of a single pearl in Revelation 21:21, that is, the Pearly Gates. "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." Holy things are compared to pearls in Matthew 7:6: "Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you." Pearls are also found in numerous references showing the wickedness and pride of a people, as in Revelation 18:16. "And saying, Alas, alas, that great city, that was clothed in fine linen, in purple, and scarlet, and decked with gold, and precious stones, and pearls!"
Title: Parable of the Pearl
Content:  and your merits Come to naught before Christ and His cross? A less common interpretation of the parable is that the merchant represents Jesus, and the pearl represents the Christian Church. This interpretation would give the parable a similar theme to that of the Parable of the Lost Sheep, the Lost Coin, and the Prodigal Son. Pope Pius XII used the phrase to describe virginity. "Pearl of Great Price" is the title of a selection of Mormon writings, one of the standard works of The Church of Jesus Christ of Latter-day Saints and some other Latter Day Saint denominations.
Title: Matthew 7:6
Content:  The pearls are all spiritual things that are to be highly esteemed. Thus though one and the same thing may be called both the holy thing and a pearl, yet it is called holy because it is not to be corrupted; and called a pearl because it is not to be contemned. Pseudo-Chrysostom: Otherwise; That which is holy denotes baptism, the grace of Christ's body, and the like; but the mysteries of the truth are intended by the pearls. For as pearls are inclosed in shells, and such in the deeps of the sea, so the divine mysteries inclosed in words are lodged in the deep meaning 
Title: Pearl
Content:  an Assyrian word meaning ring, and so could refer to anything used for making rings. Yahalom is similar to a Hebrew word meaning hit hard, so some people think that it means diamond. The variation in possibilities of meaning for this sixth stone in the Hoshen is reflected in different translations of the Bible – the King James Version translates the sixth stone as diamond, the New International Version translates it as emerald, and the Vulgate translates it as jaspis – meaning jasper. There is a wide range of views among traditional sources about which tribe the stone refers to. The Talmud mentions Marganita several times and it’s known and accepted to mean pearl.
Title: Pearl
Content:  According to Rebbenu Bachya, the word Yahalom in the verse Exodus 28:18 means "pearl" and was the stone on the Hoshen representing the tribe of Zebulun. This is generally disputed among scholars, particularly since the word in question in most manuscripts is actually Yasepheh – the word from which jasper derives; scholars think that refers to green jasper (the rarest and most prized form in early times) rather than red jasper (the most common form). Yahalom is usually translated by the Septuagint as an "onyx", but sometimes as "beryl" or as "jasper"; onyx only started being mined after the Septuagint was written, so the Septuagint's term "onyx" probably does not mean onyx – onyx is 
Title: Parable of the Pearl
Content:  of the Gospel; they who possess it know that they are rich, the unbelievers, not knowing of this treasure, know not of our wealth. Jerome: By the goodly pearls may be understood the Law and the Prophets. Hear then Marcion and Manichæus; the good pearls are the Law and the Prophets. One pearl, the most precious of all, is the knowledge of the Saviour and the sacrament of His passion and resurrection, which when the merchantman has found, like Paul the Apostle, he straightway despises all the mysteries of the Law and the Prophets and the old observances in which he had lived blameless, counting them as dung that he may win Christ. (Phil. 3:8.) Not 
Title: Parable of the Pearl
Content:  A version of the parable also appears in the Gnostic Gospel of Thomas (Saying 76): "Jesus said, "The Father's kingdom is like a merchant who had a supply of merchandise and found a pearl. That merchant was prudent; he sold the merchandise and bought the single pearl for himself. So also with you, seek his treasure that is unfailing, that is enduring, where no moth comes to eat and no worm destroys."" - Gospel of Thomas 76, Patterson/Meyer translation This work's version of the parable of the Hidden Treasure appears later (Saying 109), rather than immediately preceding, as in Matthew. However, the mention of a treasure in Saying 76 may reflect a source for the Gospel of Thomas in which the parables were adjacent, so that the original pair of parables has been "broken apart, placed in separate contexts, and expanded in a manner characteristic of folklore." In Gnostic thought the pearl may represent Christ or the true self. In the Gnostic Acts of Peter and the Twelve, found with the Gospel of Thomas in the Nag Hammadi library, the travelling pearl merchant Lithargoel is eventually revealed to be Jesus.
Title: The Allegory of Faith
Content:  a nearby cross and the sun. In a poem accompanying the emblem, Hesius states that the sphere's ability to reflect the world is similar to the mind's ability to believe in God. Selena Cant has written that the sphere is "symbol of the human mind and its capacity both to reflect and to contain infinity." The woman's pearl necklace probably relates to pearls as ancient symbols of virginity, according to Cant. There is no source for the light on her dress, perhaps indicating that she is lit by an inner illumination — a strong indication to the viewer that she is not to be considered an individual, but a symbol, according to Walter Liedtke.

Question: what does the pearl symbolize in the bible?
Answer: the Kingdom of Heaven.