Prism

This is not really a shot of prism, rather, it was simply a multiple reflections which appeared to be a prism.  It was shot at a restroom at TCDC, the black marble cladded column inside the restroom has a strong constrast agasint the white marble floor. The shadow at the cornder reflect on the white and black marble with a different contrast to form this interesting picture.
Shot with SONY NEX-5 with 18-55 zoom.