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 Trail Garnet Canyon Trail The Garnet Canyon Trail is a ( round-trip) long hiking trail in Grand Teton National Park in the U.S. state of Wyoming. The trailhead is at the Lupine Meadows parking area and climbs steeply more than in just under into Garnet Canyon. At the point, the trail forks from the Amphitheater Lake Trail and heads south and then west into Garnet Canyon. Garnet Canyon is the most popular approach route for climbers attempting to summit not only Grand Teton but also Middle Teton, South Teton, Teepe Pillar and Disappointment Peak. Though the trail becomes unmaintained once it