α-quartz crystallizes in the trigonal clear system, amplitude accumulation P3121 or P3221. β-quartz belongs to the hexagonal system, amplitude accumulation P6221 or P6421.6 These amplitude groups are absolutely chiral (they anniversary accord to the 11 enantiomorphous pairs). Both α-quartz and β-quartz are examples of chiral clear structures composed of achiral architecture blocks (SiO4 tetrahedra in the present case). The transformation amid α- and β-quartz alone involves a analogously accessory circling of the tetrahedra with account to one another, after change in the way they are linked, this action is alleged the quartz inversion.
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