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 world of dark reality. And on that night, you will keep your rendez-vous with... THE UNKNOWN." The episode is considered an unusual one, even for "The Outer Limits". More than almost any other, it is filled with weird camera angles, atmospheric photography, gothic sets, creepy music (much of which surfaced later in the TV series "The Invaders"), and offbeat writing and performances, giving the episode something of an "art house movie" feel. This episode was the final acting role of Sir Cedric Hardwicke. He died on August 6, 1964, a few months after this episode aired. The Forms of Things