The term “blackwork” is most commonly used when describing the blackwork embroidery technique which was popular in the Middle Ages. As the term itself indicates, blackwork embroidery technique is characterized by black thread sewn/embroidered on white background/fabric. It is less known that the term mentioned also refers to special techniques of enameling and engraving metal surfaces in jewelry manufacturing that was used for a rather short time in the Middle Ages. At that time blackwork technique was mostly used in France, Germany and the Netherlands.