1.stainless mosaics,304 steel,ceramic backed 2. gold matte stainless,trendy penny rounds Metal Mosaic has resistance performance of acid, alkali, cold and heat stability strong etc. Characteristics. Its early from European countries the widespread use of decoration, all the more its elegance high-grade, different.1. material 304#stainless steel and crystal and marble 2.Surface brush/polish, no ...