Citrine varies in color from yellow to light brown and is easily confused with citrine. The yellow color in citrine is due to the presence of iron oxide in water. Natural citrine is scarce and produced in few places, with only Brazil and Madagascar producing high-quality Citrine in limited quantities.
Tan crystal is also called tea crystal, and smoke quartz (brown quartz) is also called smoke crystal and ink crystal Radioactive Most of the tea crystals are hexagonal columns. Like other transparent crystals, there are sometimes connotations such as ice crack, cloud and fog.