Travertine is a sedimentary rock formed by the deposits of minerals and organic materials (mainly calcium carbonate, CaCO3). Water passes through and dissolves limestone, picking up calcium carbonate. Upon raising temperature, the water releases its...

Marble starts its existence as a limestone compound, then it transforms into marble by a process of intense heating at high temperatures within the core of the earth which changes its mineral composition to form...

Onyx is striped, semiprecious variety of the silica mineral agate with white and black alternating bands. Onyx is used in carved cameos and intaglios because its layers can be cut to show a color contrast...

Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3) in the form of the mineral calcite. It most commonly forms in clear, warm, shallow marine waters. It is usually an organic sedimentary rock that forms from...

Granite, coarse- or medium-grained intrusive igneous rock that is rich in quartz and feldspar; it is the most common plutonic rock of the Earth’s crust, forming by the cooling of magma (silicate melt) at depth....

Collection of the most beautiful imported stones...