Yttrium aluminium garnet (Ce:YAG) is used as a phosphor in cathode ray tubes and white light-emitting diodes, and as a scintillator. YAG for a period was used in jewelry as a diamond and other gemstone simulant. Colored variants and their doping elements include: green (chromium), blue (cobalt), red (manganese), yellow (titanium), purple (neodymium), pink, and orange. As faceted gems they are valued (as synthetics) for their clarity, durability, high refractive index and dispersion. The critical angle of YAG is 33 degrees. YAG cuts like natural garnet, with polishing being performed with alumina or diamond (50,000 or 100,000 grit) on common polishing laps. YAG
Gemstone Healer although some do return to life such as Nicodemius himself who can be "killed" but may eventually return. The goal is to split the Gemstone on one of the altars that are in the game and the place the pieces on other altars and then "heal" them with the use of healing tools that are found throughout the Center. "Gemstone Healer" was much less successful than its predecessor, only selling 6,030 copies in North America. Gemstone Healer Gemstone Healer is a computer action adventure game created by Canadian developer Paradigm Creators and published in 1986 by Strategic Simulations. It was