COMPOSITION 100% NATURAL BASED ON 3 GROUPS OF NATURAL ELEMENTS. 1. GRANITE MINERALS: QUARTZ & FELDSPAR THAT GRANT HARDNESS AND STRENGTH .2. GLASS MINERALS AND SILICA THAT GRANT CHEMICAL STABILITY. 3. NATURAL OXIDES THAT GRANT CHROMATIC PROPERTIES. 14 COLORS FULL BODY AND 25 COLORS NEOLITH DIGITAL DESIGN PRINTING RICH IN DETAILS AND AND FINISHES.