Citrine
Natural citrines are rare.
Major sources include Brazil, Madagascar, Russia, and the Ural Mountains. Many commercial citrines are made by heat-treating amethyst or smoky quartz.
Our stones are unheated from Brazil
The photo depicts The Malaga Citrine, one of the world's largest faceted citrine gemstones in the world. It weighs an astonishing 20,200 carats