The interior is rich in scagliola and frescoes. Venetian plaster techniques include marmorino, scagliola, and sgraffito. Inside there more restrained grandeur with the entrance hall boasting four massive scagliola columns. The entrance hall is lined with grey gritstone and green scagliola columns. The main hall has columns and pilasters made from Scagliola marble. Slabs of Marezzo scagliola may be used as table tops. Unusual in an Orthodox church are the Scagliola (simulated marble) sculptures. Co. The walls, themselves, were made with an imitation marble known as scagliola. The use of scagliola declined in the 20th century. The interior details were accented with terra cotta and scagliola. In the United States scagliola was popular in the 19th and 20th centuries. Cruikshank suggests that the unfluted shafts were marbled or of scagliola. The scagliola is then surfaced in place. The interior has yellow "scagliola" pilasters. In 1819, the walls were decorated with polychrome marble in scagliola by Stefano da Morrovalle.