semi-precious stone Spain

...Onyx is a material used in the construction and decoration of homes and buildings due to its elegance, durability, and aesthetic appeal. It is a natural, semi-precious stone, primarily composed of silica, and comes in various shades, although the most common are black and white, featuring unique veining that can be in different colors. These unique veins and patterns make each piece of onyx one-of-a-kind, which makes it a highly valued material in high-end projects.