The ametrine formation process is relatively rare and occurs under specific geological conditions. The only commercial source of ametrine is the Anahi mine located in Bolivia. According to legend, the discovery of this deposit dates back to the 1600s when a Spanish conquistador stumbled upon it. However, the exact location of the deposit was lost for over three centuries. Rediscovered in the 1960s, the mine’s ametrine started reappearing in the gemstone market during the 1970s.