SPECIAL PREPARATION FOR POLISHING MARBLE AND GRANITE BLACK A top quality concentrated wax, dissolved in an non-inflammable solvent. This product, born in 1937, is a paste with exceptional polishing and protective power, due to the extremely high quality of raw materials used in its preparation. SPECIAL PREPARATION penetrates into the material (marble, granite or stone agglomerates) and if it is then rubbed with fine steel wool, a felt pad, or a dry woollen or cotton cloth, a uniform brilliant and long-lasting mirror-finish will be achieved. Its special composition fills and seals porosities in the material and covers small scratches.