gri·saille | gri-ˈzī
A form of enamel, painted in monochromatic colors
The term grisaille refers to a form of enamel that is painted in monochromatic colors, often neutral greys. Traditionally it is associated with sculpture and therefore gives a sculpture-like look and feel to paintings or pieces of jewelry or antiques in the style. Grisailles may be completed as a final look for a piece, or may be used to provide an outline or model for an engraver to work over. Early examples of grisaille dates back to the 14th century when the technique was used to imitate sculpture and the worship of sculpture in paintings. In modern use, it is used in stained glass, and a select number of types of paintings and other artwork, as well as a baseline for certain pieces of jewelry.