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 Forms of cricket Cricket is a multi-faceted sport with multiple formats, depending on the standard of play, the desired level of formality, and the time available. One of the main differences is between matches limited by time in which the teams have two innings apiece, and those limited by number of overs in which they have a single innings each. The former, known as first-class cricket if played at the senior level, has a scheduled duration of three to five days (there have been examples of "timeless" matches too); the latter, known as limited overs cricket because each team bowls