As the earliest known gems, pearls have been regarded as the most precious of gems for centuries. Actually, pearls are gems like none other. They are derived from a living creatures, mollusks, and are basically organic matter. Because they are so old and valuable, pearls are surrounded by traditions.
Pearls become tuned to the stages of the moon. Astrologically they link to the moon. Pearls are sometimes called teardrops of this moon. Other folklore tales say that pearls were created as the heart of oysters when one rain drop fell from heaven and touched on it.