Iridescence makes things more pretty

Iridescence is an optical phenomenon of surfaces in which hue changes in correspondence with the angle from which a surface is viewed.

The word iridescence is derived in part from the Latin word Iris, meaning "rainbow", which in turn derives from the goddess Iris of Greek mythology, who is the personification of the rainbow and acted as a messenger of the gods.

Iris was married to Zephyrus, who was the god of the west wind.

Iridescence can be seen in soapy bubbles, seashells, butterfly wings, pearls, etc