Marble is softer stone , naturally more porous, which makes it softer
is a carbonate sedimentary rock that is often composed of the skeletal fragments of marine organisms
Is a form of limestone deposited by mineral springs, especially hot springs.
composed mainly of quartz and feldspar with minor amounts of mica,
a classic sedimentary rock composed of sand-sized grains of mineral rock or organic material
is formed of bands of chalcedony in alternating colors.
is a metamorphic rock formed when quartz-rich sandstone or chert has been exposed to high temperatures and pressures.