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 Publishing then to Gemstone, which has been the home of Cochran's EC reprints for over 15 years. Reprinting the Cochran/Gladstone-reprints of "The Haunt of Fear", "The Vault of Horror" and "Weird Science" (all 1992), Gemstone also republished (in single issue and 'annual' - four issues per 'annual' - format): Oversize, hardback, slip-cased collections of these comics had been previously published in black & white by Cochran during the 1980s as "The Complete EC Library". This Library was then added to by Cochran/Gemstone with 2005's "Picto-Fiction" collection, comprising the EC comics: "Confessions Illustrated", "Crime Illustrated", "Shock Illustrated" and "Terror Illustrated", along with