Georgia Nassikas, a new Touchstone artist, paints in the encaustic medium, so she has something in common with the ancient Egyptians who painted mummy portraits 1700 years ago -- and more recently Paul Klee, Wassily Kandinsky, Diego Rivera, Jasper Johns, just to name a few. All these artists painted at some time in their lives with the encaustic medium: hot beeswax infused with colored pigments.