Granite is one of the oldest stones and it has been used as a building material since ancient times. It is one of the most durable natural stones around and will far outlast the building it is installed in, making it a very popular choice construction projects. Granite continuously adds value to property over time and will not depreciate. Granite creates an instant impression of elegance, regardless of its finish. Granite is highly desired when it comes to real estate and is a definite plus on any realtor’s checklist.
Granite is available in slabs and tiles. It is commonly used for kitchen countertops, bar tops, and vanities, but is also used for walls, floors, fireplace surrounds, window sills, and even building fascia. Its unique variations in color and veining make each specimen a natural work of art.
Marble is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite. Marble is typically not foliated, although there are exceptions. In geology, the term "marble" refers to metamorphosed limestone, but its use in stonemasonry more broadly encompasses unmetamorphosed limestone. Marble is commonly used for sculpture and as a building material.
Uses of Marble:
White marble has been prized for its use in sculptures since classical times. This preference has to do with its softness, which made it easier to carve, relative isotropy and homogeneity, and a relative resistance to shattering. Also, the low index of refraction of calcite allows light to penetrate several millimeters into the stone before being scattered out, resulting in the characteristic waxy look which gives "life" to marble sculptures of any kind, which is why many sculptors preferred and still prefer marble for sculpting.
b. Construction marble
Construction marble is a stone which is composed of calcite, dolomite or serpentine which is capable of taking a polish. More generally in construction, specifically the dimension stone trade, the term "marble" is used for any crystalline calcitic rock (and some non-calcitic rocks) useful as building stone. For example, Tennessee marble is really a dense granular fossiliferous gray to pink to maroon Ordovician limestone, that geologists call the Holston Formation.