... couter,laboratory countertops,washing basin,bar counter,writing table,windowsill, counter,floor and wall surface. It's outstanding be used in those ... approximately 93% quartz,the hardest components of natural granite,the surface is highly scratch and impact resistant. However, as with any ... impact,excessive force/pressure,or misuse can damage the stone surface. 4. Do i need to seal LEESTON Quartz?No. ...