Symbols missing a cause: the testimony of touchstones from Viking Age Iceland

From the Early Bronze Age, tools used to determine the nature and value of precious metal have been used as traditional symbols in burial rituals. During the Early Medieval Period, balances, weights and touchstones became widespread in the northern part of Europe, or bullion-economy zone. This paper focuses on a selection of touchstones from Viking Age Iceland, from both graves and settlements. Chemical microanalyses of streaks of metals observed on their surfaces show that not only precious metals, but also other non-ferrous metals, and in particular lead, have been tested on touchstones. The settlement finds come primarily from high-status farms which have produced evidence of working with non-ferrous metals. The disproportion between the low frequency of precious metals and the relatively high representation of touchstones in burials, including the occurrence of clearly ostentatious specimens, is apparent in Iceland. However, due to uncertainty as to the origins of the metal streaks on imported touchstones, the workshop finds are regarded as the more important source for knowledge of both metalworking and social relations in Viking Age Iceland.