White Onyx Vanity Tops

Onyx is a porous rock bit , that is, in its formation there is little infiltration of water as marble. It is a limestone composed of the mineral calcite and aragonite , formed from water that contains lime and precipitates forming deposits in strata (hence the reason is always banded ) in areas of thermal or drip into cavities sources. Has hardness 4 , Scale Moz , the same found in the granites