Conte art is often created in conjunction with graphite or charcoal, as pictured above.
What is conte?
Frequently used for sketching and outlines, conte crayons, or conte sticks, are a mix of graphite or charcoal and wax or clay. This makes the medium waxier than soft pastels, and makes them suitable for more detailed work than drawing with pastels generally allows. Conte also comes in degrees of hardness, which is why its enthusiasts prefer it to charcoal drawing.