Nephrite as a surface treatment. A lot of nephrite tools and amulets are known since the Early Neolithic (VII mill. BC) to the Late Chalcolithic (V mill. BC) on the Balkans (mainly Bulgaria; also in Greece, Serbia, Croatia) from two or more unknown sources - Balkan "nephrite culture". Such tools are found in the Later Neolithic of Poland (from the most probable local source Jordanów), Sardinia (Italy) (unknown source) and Switzerland (Kostov, 2005; 2013). Single or just a few finds of nephrite artifacts are reported also from some other European countries. During Neolithic times, the key known sources of nephrite jade
History of the Philippines were made from nephrite. Nephrite excavated in the Philippines were of two types: white nephrite and green nephrite. The Sa Huỳnh culture centred on present-day Vietnam, showed evidence of an extensive trade network. Sa Huỳnh beads were made from glass, carnelian, agate, olivine, zircon, gold and garnet; most of these materials were not local to the region, and were most likely imported. Han dynasty-style bronze mirrors were also found in Sa Sa Huỳnh sites. Conversely, Sa Sa Huỳnh produced ear ornaments have been found in archaeological sites in Central Thailand, Taiwan (Orchid Island), and in the Philippines, in the Palawan,