This necklace is alive! It hangs on a 17 inch antique bronze necklace and is sealed in a 3/4 inch glass globe with water, a sea fan and sand. It comes in a cute gift box to give as a gift that will make a lasting impression. The marimo moss ball lives in water and needs very little light to survive. They grow very slow (up to 3mm a year) so this will last quite a while in the globe. Just remember to keep it outside the jewelry box for some light when not being worn.