At the height of Imperial Russia's power, orange-pink topaz was brought from Brazil to decorate the jewelry of the Tzarina. Since then, these colors have been known as imperial topaz, and still today remains one of the most coveted topaz varieties. Interestingly enough, some sources dispute this legend and state that imperial topaz was indeed named in honor of the Brazilian ruler in power at the time, Emperor Don Pedro. Classified as a rare collector's gem, the world's supply of imperial topaz comes from sources in the Brazilian state of Minas Gerais. It is generally the reddish-orange or orange-red variety of topaz that's considered "imperial." Some also consider yellowish-orange, cognac-colored and pure orange to be imperial topaz.