This raw chunk of citrine displays small red-orange-brown crystals. The outside of the geode is raw without any acid coating.
Citrine quartz forms from amethyst that is heat treated either naturally or by man.
Notable sources of rare, naturally-sourced citrine are Brazil, Uruguay, Argentina, Madagascar and Bolivia. Russia is one of the producers of synthetic citrine while Brazil is famous for its stunning heat-treated amethyst.
Citrine is one of the birthstones of November (the other being topaz).
