The Bible

Exodus 32:2

² Aaron said to them, "Take off the golden rings, which are in the ears of your wives, of your sons, and of your daughters, and bring them to me."

Commentary

Works, emeralds, purple broidered work, fine linen, coral, and agate

In Ezekiel 27:16, coral signifies knowledge of good. (Arcana Coelestia 1232)

Works, emeralds, purple broidered work, fine linen, coral, and agate, (Ezekiel 27:16), signify knowledges of good.