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 (Steven Universe) during the episode's storyline that her sunglasses help her channel her future vision. According to Sugar, Garnet was intended to be a fusion since the pilot episode, though the characters of Ruby and Sapphire came into focus while Sugar was writing for Garnet. Sugar described the process as "reverse engineering" the two personalities based on what the production team brought to the show. The first time viewers learn that Garnet is a fusion is the finale of the first season, "Jail Break", but hints and foreshadowing in earlier episodes had led many viewers to suspect it earlier. Neither Ruby nor