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
Forms of cricket is often seen as "old-fashioned" and is typically used for friendly matches rather than in organised league play. Cricket is also played in several different shortened forms, designed to pack as much action as possible into an hour or two, enabling them to be played as a single contest in an evening, or as a series of multiple contests between different teams that cover the entire day. Such forms have evolved since the 1980s, and take cricket an additional step beyond one-day cricket. Most forms will resemble twenty-twenty cricket in nature, although shorter formats with reduced numbers of players, typically