This article deals with the filigree and granulation jewellery of the first millennium AD. Due to their characteristic method of production, these artefacts are particularly suitable for research into the technical knowledge of the craftsmen who made them and the application of their know-how. The objects are made of high quality raw materials (precious metals), they are produced with specific tools (dies), and they are often composed of several hundred separate parts. Hence they provide an extensive basis for studying the homogeneity of the metals and the uniformity of the techniques used. The gold objects of the Viking period that belong to the jewellery recovered on the island of Hiddensee and the results of their analysis serve explore these questions in detail.