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 Canyon up those two summits. Backcountry camping is allowed, by permit, in Garnet Canyon at areas designated by the National Park Service. Camping permits can be obtained in advance via registration or in person at the Jenny Lake Ranger Station. Garnet Canyon Garnet Canyon is located in Grand Teton National Park in the U.S. state of Wyoming. The canyon was formed by retreating glaciers which reached their last glacial maximum around 15,000 years ago. While Garnet Canyon is a less popular destination for recreational hikers than nearby Cascade Canyon or Death Canyon, it is an important approach to many significant and