Gesso duro

Ges´so du´ro

1.A variety of gesso which when dried becomes hard and durable, often used in making bas-relief casts, which are colored and mounted in elaborate frames.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
particularly if Burne Jones will colour it as suggested which would be most interesting.' (18) At first, Boehm had thought that terracotta would be a suitable material for the relief, but by this time he had become convinced that gesso duro, where the plaster and size were hardened with lime and marble dust, was more appropriate.