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
Henry Garnet of [[John and Christopher Wright|John Wright]]. In November he was with [[Anne Vaux]] (whose family he had been introduced to in summer 1586) at White Webbs near Enfield, renewing the vows given on the [[Presentation of Mary|Feast of the Presentation of Our Lady]]. On 9 June 1605, he was to be found in a room on Thames Street in London, with [[Robert Catesby]]. In the midst of what Garnet later recalled was a seemingly casual conversation, Catesby asked the priest about the morality of "killing innocents". Garnet replied according to Catholic theology, that often, during war, innocents were killed alongside