The possibility of obtaining tinted glazes without the synthesis of iron-bearing pigments is considered. Fine particles of an iron-based alloy, for instance steel obtained by fine milling of metal working waste, are introduced in the glaze composition. The testing of a glaze suspension based on window glass cullet with additives of white-burning clays and finely milled carbon steel chips demonstrate that this suspension after firing yields a uniformly tinted coating.Glazing of articles made of various inorganic materials is finding ever increasing applications. Apart from glazing of traditional ceramics, various technologies for glazing concrete products have been developed. Unlike ceramics, concrete items cannot be completely placed into a firing furnace due to the presence of hydrate water in cement stone. It is proposed to fire glaze on concrete using screen furnaces or the induction discharge flame of a gas burner [1,2].Glazing of ceramics and nonfired materials uses various colorant pigments, including those containing F 2 O 3 as a chromophore. It is known that the maximum effect in the formation of a tint depends on the electromagnetic radiation absorption spectrum, which is a light flux due to the electron transfer between the chromophore ion and oxygen, i.e., the emergence of charge transfer bands [3]. The emergence of color bands is related to photon absorption due to a charge transfer with the transition of an electron from the oxygen ion to the central ion (usually a transition element, such as Fe, Mn, Cr, Co, Ti, etc.), the transition of an electron from ions of the same metal in different valence states in theiretc.), and the formation of redox complexes with ions of different variable-valence metals (Fe 3+ -O 2--Mn 2+ , Mn 4+ -O 2--Fe 2+ , Ti 4+ -O 2--Fe 2+ , Mn 4+ -O 2--Ti 3+ ) [3].The presence of these elements in a glaze contributes to a better chemical interaction between the glaze layer and the article surface (due to ion substitution) and the emergence of a transition layer.It is advisable to use variable-valence metals (iron, cobalt, nickel, chromium, manganese, etc.) as colorant components in glazes for nonfired materials, since they have a high tinting capacity and a favorable effect on the physicochemical properties of glazes intended for deposition on nonfired materials. The most preferable compounds are oxides, but other compounds are possible as well, such as sulfides, sulfates, chlorides, nitrates, and also microparticles of some metals [4]. Tinted metal compounds can be introduced directly in a raw glaze batch or in frit melting.At the same time, tinted glazes can be obtained as well without synthesizing relatively expensive iron-bearing pigments.In this study it is proposed to introduce Fe 2 O 3 for glaze tinting in the form of fine particles of iron-based alloys, for instance, steel particles produced by fine milling of metal working waste (chips, filings, etc.) [5]. Standard carbonbearing steel contains (here and elsewhere, wt.%): 0.06 -0.62 carbon, 0.25 -0.90 manganese, not more t...