... 1) Own sandstone quarry 2) Professional factory Chinese natural desert sand sandstone SandstoneOwn quarry+Professional factory+good quality+best price ... wooden, green, black, grey, greyish white,red, brown, coffee, landscape,golen yellow, purple etc.Surface finishhoned, natural, sawn-cut, sandblasted ... strength1000-3000kgs/cm3water absorption0.13%Hardness>HS70 Chinese natural desert sand sandstone