"iridescent"

-(adjective) In our list of most beautiful words in the English language, iridescent is the most mystically colorful in the spectrum of vocabulary. Iridescence describes the change of color at different angles. Most importantly, it focuses on the luminosity projected by each color. Its beauty is also found in its sound; just say the word. Uttering the word evokes enough beauty, but defining the word establishes an ethereal quality of color found in nature, such as that of a rainbow, seashells or soap bubbles. (via wordsnquotes)