Mineral abrasives are made of many different materials. Choices include sodium bicarbonate (baking soda) or calcium carbonate; crocus, rouge, or iron oxide; emery; garnet; and sulfate minerals such as ...
Kieserite / Sulphate Kieserite is a magnesium sulphate mineral. Sulfate minerals such as Kieserite are softer and water-soluble, providing performance similar to sodium bicarbonate or baking soda ...