Necklace measures 38 inches from end to end. It has no clasp and is not a closed loop. It can be worn by draping and twisting as in photo below.
Aquamarine, along with emerald, is a gemstone variety of the silicate mineral beryl. Its name meaning "sea water," aquamarine ranges in color from a sea-green to a sky-blue and generally forms large, somewhat clear crystals. In ancient times, aquamarine jewelry was thought to protect sailors.