Citrine

Citrine is a yellow variety of quartz, with colors ranging from pale yellow to golden yellow, and even orange-brown. Its natural hue comes from traces of iron present in its crystalline structure. Rare in nature, citrine is often confused with heated amethyst, which can take on similar yellow shades. Formed mainly in rock cavities and hydrothermal veins, it is distinguished by its transparent crystals and its vitreous luster characteristic of quartz.