Coral
Coral appears in the UPDV in two places, each treating it as a precious commodity placed on a list with other costly stones and goods. The references stand at opposite ends of the use — one sapiential, one mercantile.
Coral and the Price of Wisdom
In the wisdom hymn of Job 28, coral is named among the gems against which wisdom cannot be valued: "No mention will be made of coral or of crystal: Yes, the price of wisdom is above rubies" (Job 28:18). The verse uses coral and crystal as the upper end of human estimation; even these go unmentioned next to wisdom, and rubies are introduced only to be surpassed.
Coral as Tyrian Trade-Goods
The other appearance is commercial. In the lament over Tyre, coral is itemized with other luxury wares brought in by Syrian merchants: "Syria was your merchant by reason of the multitude of your handiworks: they traded for your wares with emeralds, purple, and embroidered work, and fine linen, and coral, and rubies" (Eze 27:16). Coral here belongs to the catalog of Tyre's wealth — beside emeralds, purple, embroidered work, fine linen, and rubies — that the prophecy weighs and finds vulnerable.
In both contexts coral keeps the same role: a high-value object set among other high-value objects. Job uses it to mark the ceiling of marketable goods that wisdom still exceeds; Ezekiel uses it to mark the substance of a trade economy whose collapse the chapter foretells.