Small quantities of naturally colored citrine are found at many locations throughout the world. The frequency of its occurrence is demonstrated by the locality maps at mindat.org.

The most important commercial source of citrine with a natural yellow to orange color are the pegmatites of eastern Brazil. Other countries where citrine has been produced include: Argentina, Bolivia, Madagascar, Mexico, Russia, Spain, and Uruguay.

The most important source of amethyst that is heat treated to produce a citrine color is also eastern Brazil. Russia is the most important source of synthetic citrine.