Figure 4
From: Characterization of Castellani nineteenth-century gold jewellery by in situ micro-XRF spectroscopy

Ternary diagrams Ag-Au-Cu showing the composition of jewels with similar features. The two hairpins with ram’s head have the same composition, while the ʻIos headsʼ elements have different compositions in the two necklaces 85045 and 85047.