The reason for Neptune's deep blue coloration is the high content of methane in the atmosphere. From the sunlight it receives, it absorbs the red end of the visible spectrum and reflects back the blue light.
Psychedelic blue glass from the 1960s set in hand-forged sterling silver.
You will not be receiving the exact piece in the photo but one that I have created especially for you. Please allow 1-3 weeks production time and see my FAQ for information about shipping.