The names of simple crystallographic forms, proposed in 1924 on the initiative of Prof. A.K.Boldyrev by Fedorov Institute, have been widely spread and recognized. This is evidenced by the statement of famous foreign crystallographers I.D.H. Donnaya and H. Kurien, who spoke at the Committee on Nomenclature of the French Mineralogical and Crystallographic Society in 1958: “The principles on which a satisfactory terminology of forms should be based are known. We owe this mainly to Grote and the crystallographers of the Fedorovsky Institute <...>. The nomenclature described here is used with some minor variations in the languages: German, English, Spanish, Italian, Dutch, Russian” ....