Cygnus, also known as the Swan or the Northern Cross, is a constellation visible all summer high in the northern hemisphere. Zeus seduced Leda while disguised as a swan, though the constellation has also been tied to Orpheus, Phaethon, and King Cygnus. If you want to take flight high in the sky during the daylight hours, on a cloudy night, or under the bright city lights, this necklace is for you.