Citrine is a Quartz variant that has iron content and that got a certain heat exposure during its formation which led to its champagne yellow color. Natural Citrine has this kind of yellowish champagne color. You will often find baked amethyst at gemstone conventions which should pass for citrine to the untrained eye. But luckily the fake citrine can be spotted either by the distinctly orange hue or that the formation looks a lot like that of amethyst. All things considered, natural citrine is relatively rare. Most of today’s Citrine is sourced in brazil.