Born in Pirmasens as the daughter of the shoe manufacturer Gustav Rheinberger [de], Gerda Rheinberger studied at the Meisterschule für das gestaltende Handwerk in Düsseldorf from 1946 to 1947 and was a private student of the sculptor Willi Hoselmann.
[1] From 1948 to 1949, she attended the sculpture class of Adolf Wamper at the Essen Folkwang University of the Arts and from 1950 to 1952, Gerda studied at the Kunstakademie Düsseldorf with Bruno Goller [de] and Joseph Enseling.
Gerda Kratz had been a member of the Düsseldorf Women Artists' Association and the Künstlerverein Malkasten since 1984.
Kratz war eine Gerresheimer Künstlerin, die hohes handwerkliches Können mit Ideen und Humor verbinden konnte.
Sie arbeitete in Stein, Bronze, Keramik, Holz und auch Kunststoff (Leguval).