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
The Forms of Things Unknown The Forms of Things Unknown "The Forms of Things Unknown" is an episode of the original "The Outer Limits" television show. It first aired on May 4, 1964, and was the final episode of the first season. It was filmed in a dual format as both a regular episode of "The Outer Limits" and as a pilot episode for a possible series called "The Unknown". The opening and closing narration listed here are only in "The Unknown" version and not in the broadcast "The Outer Limits" episode. There are plot differences between the two versions as well. "There is a