Nephrite Nephrite Nephrite is a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite or actinolite (aggregates of which also make up one form of asbestos). The chemical formula for nephrite is Ca(Mg, Fe)SiO(OH). It is one of two different mineral species called jade. The other mineral species known as jade is jadeite, which is a variety of pyroxene. While nephrite jade possesses mainly grays and greens (and occasionally yellows, browns or whites), jadeite jade, which is rarer, can also contain blacks, reds, pinks and violets. Nephrite jade is an ornamental stone used in carvings, beads, or cabochon cut gemstones.
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