What is "chryssa"

Chryssa Vardea-Mavromichali (; December 31, 1933 – December 23, 2013) was a Greek American artist who worked in a wide variety of media. An American art pioneer in light art and luminist sculpture widely known for her neon, steel, aluminum and acrylic glass installations, she has always used the mononym Chryssa professionally. She worked from the mid-1950s in New York City studios and worked since 1992 in the studio she established in Neos Kosmos, Athens, Greece.