New Castle Grey is a metamorphic marble from Turkey. Metamorphic rocks are formed by magma or sedimentary rocks which occurred first in the crust, and the mineral composition, chemical composition and structural structure changed under the influence of environmental conditions. The surface of New Castle Grey has a clear crystallization effect. Elegant Grey color is as a keynote and matched with lines in white and brown, which brings us chic texture. It is widely used in staircases, receptions, floors, walls and other interior and exterior decoration.