Imperial topaz stones found in the mines of Katlang, Mardan, Pakistan exhibit rare and beautiful red, pink, orange, yellow, and peach colors that are not often found elsewhere. While imperial topaz is often associated with the mines of Brazil, some of the highest quality imperial topaz stones come from the mines in Katlang, Mardan, Pakistan, though they are rarely mentioned by gemologists. Imperial topaz stones from mines in Pakistan and Afghanistan tend to have very rare and unique color variations not found elsewhere.