Oonium is a natural semi-precious mineral. It is a kind of agate. Its unique property is its ability to let light rays penetrate deeper than 5 centimetres. No other noble natural stone has this property in full. Lighting is often used in the decoration of rooms with onyx to bring out the stone’s special depth and devastatingly beautiful texture. The colour palette of this natural mineral is very rich and varied: from green and blue to shades of pink and yellow. Products made of onyx are sensitive to mechanical influences. Unlike marble, onyx is more resistant to aggressive chemical agents. It is ideal for decorating bathrooms.