Citrine is a yellow to brownish-orange variety of the mineral quartz. Its color comes from the presence of iron and can range from pale yellow to deep amber. Often used in jewelry, citrine is valued for its beauty and durability. It is also known as the "merchant's stone" because it is believed to bring prosperity and success. This gemstone is found in various locations around the world, including Brazil, Spain, and Madagascar. Citrine is often confused with topaz, but they are distinct minerals. It is also popular in crystal healing practices, where it is thought to promote positivity and energy.