40 - Plaster ring cube
Plaster casting can often suggest a solid, bulky, physical kind of sculpture, where the cast is a facsimile of an original, often modelled in clay.
This “cubering” is an example of a shape made physically and visually lighter with the use of a central core, displacing the inner mass of the form. See photo.
Plaster may be coloured using any water-soluble paint added to the water before mixing. see photo. In this case the quantity of blue plaster was insufficient to fill the mould entirely, so was topped up with the next mix of standard, white, uncoloured plaster.