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
Garnet Peak Garnet Peak Garnet Peak is a mountain in east-central British Columbia, Canada, located between Goat Creek and Azure Lake. Situated in the Cariboo Mountains of the Columbia Mountains, it is the third highest mountain in Wells Gray Provincial Park with an elevation of . Garnet Peak is a prominent mountain as one drives the Clearwater Valley Road into Wells Gray Park and is first visible from south at the Clearwater Valley Overlook. Garnet Peak stands alone as a pyramidal peak. From Clearwater Lake, it appears to be part of the Huntley-Buchanan Ridge which extends most of the length of Azure