| Quartz | review | Rossman (1994) |
| Lehmann and Bambauer (1973) | ||
| Fe2+ | Cohen and Hassan (1974) | |
| amethyst | Fe | Aines and Rossman (1986) |
| Adekeye and Cohen (1986) | ||
| Cohen (1985) | ||
| Balitsky and Balitskaya (1986) | ||
| Cox (1977) | ||
| Cohen and Hassan (1974) | ||
| chalcedony | Ignatov and Platonov (1992) | |
| chrysoprase | Ni2+ | Sachanbinski et al. (2001) |
| citrine | Fe3+ | Balitsky and Balitskaya (1986) |
| Aines and Rossman (1986) | ||
| rose | Fe2+/Ti4+ | Goreva et al. (2001) |
| Ignatov et al. (1990) | ||
| Ti3+/Ti4+ | Cohen and Makar (1985, 1984) | |
| Al-O--P | Maschmeyer and Lehmann (1983) | |
| Fe2+/Ti4+ | Hosaka et al. (1986) | |
| Smith et al. (1978) | ||
| Hassan and Cohen (1974) | ||
| Ti3+ | Lehmann (1969) | |
| smoky | Partlow and Cohen (1986) | |
| Cohen and Makar (1982) | ||
| Nassau and Prescott (1977) | ||
| Schirmer (1976) | ||
| Nassau and Prescott (1975b) | ||
| Weeks (1970) | ||
| green | Platonov et al. (1992) | |
| Platonov et al. (1991) |