Most pegmatites are granite with quartz, feldspar, and mica. Pegmatites are important because they often contain other rare earth minerals and gemstones, such as aquamarine, tourmaline, topaz, fluorite, apatite, tin, and tungsten, among others.
Granitic pegmatites, boron granitic pegmatites, lithia pegmatites, and boron lithia pegmatites exist.
See also: List of minerals