comprised mainly of quartz,Rongguan Engineered Quartz is hard 0 condense,it is superficail hardness is very high(mohs hardness:6-7), is resistant to scratch,wear,shock,rupture 0 compression,0 have excellent heat resistance,corrosion resistance,0 stain resistance,which are advanced to artificial G636www.Cream Stone-granite.asia>China Granite.Not being disorted,split,0 being resistant to discoloration ,fading,it is durable 0 maintainance free,further more,it does not contain any pollution 0 radiation,thus is an environmental friendly building materailChina Stone Productour G636www.G636www.shuhua.biz>5stone.biz>Xiamen Stone size is 2400*1200mm,the thickness is 12mm 0 18mm