Unique Russian Sauce is a cross between a soft pastel and a Conte crayon. It combines high quality pigment with Chasov Yar clay and industrial carbon for a velvety smooth drawing crayon. Provided in a reusable wooden box with slide-out top. This set of ten colors includes Black, White, Gray, Light Gray, Warm Gray, Gray-Green, Gray-Azure, Brown, Ochre, and Bistre.