Antonietta Raphaël Mafai (July 29, 1895-September 5, 1975) was an Italian artist of Jewish heritage and Lithuanian birth who, with her husband Mario Mafai and two other artists, founded the 20th-century art movement Scuola Romana.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Antonietta_Raphael
Le Tre Sorelle by Antonietta Raphaël
1936 / Colored concrete / 37-2/5″x23-3/5″x21-3/4″ / La Galleria Nazionale, Rome, Italy
Antonietta Raphaël on Artnet: http://www.artnet.com/artists/antonietta-raphael/