Stuckmarmor is the German version of what many know as scagliola. Stuckmarmor is a mixture of plaster, pigment and ingenuity.
Look familiar? This starts just like scagliola, a very hands on procedure mixing in the pigments with the plaster.
Colors are blended and then shaped into loaves or balls and can be mixed to make the imitation of veins in marbles. This photo shows a restoration of a profile at the base of a column. The stuckmarmor is applied to the damaged area, filling in and giving the illusion of marble.
Turns into this when different clumps of color are mixed, sliced thin and polished to perfection.
My friend Gina of Art and Alfalfa did a wonderful blog post on stuckmarmor.
She shows the complete process and some wonderfully detailed columns.
Photo from Art and Alfalfa
So, whatever, you call it, Stuckmarmor or scagliola, many cultures have embraced the art of plasterwork and elevated it to the wonderful art form.