Glass half dome paperweight with Mondrian painting "Composition with large red plane, yellow, black, grey and blue" (1921). This composition is one of the principal works of what Mondrian referred to as Neoplasticism. Characteristic of Mondrian's modern art aesthetic, he breaks the canvas down into the formative shape of square and rectangle, only distinguished by a minimal selection of colors. These colors only include the purest -- primary red, yellow, and blue, and black and white.