Making scagliola nowadays is the same technique craftsmen used centuries ago.
Materials and tools are essentially the same, except for a few essential updates, such as sanding paper instead of plumice.
In the 16th Century, scagliola was mostly used to mimic marble veining and marquetry. Subsequently, the pliability of the mix was discovered as the eloborative technique.
In the 17th Century, scagliola became a true artistic expression itself. It demonstrated to be capable to figure a wider range of colours to build great impact Masterpieces.