Onyx or Onice, is considered semiprecious stone, accepted as a variety of agate or chalcedony composed of silica. It has incredible an attractive vision line and great variety of grained tonalities and veins. Due to the presence of mineral strips on it, Onyx is present in an enormous chromatic palette. Also we can find uniform Onyx , but it is seldom found.
Its visual character is based on cut direction, showing a circular and translucid design if it is cross-sectional, and showing sedimentary stratification if the cut follows the vein direction. Cross-section is usually more frequent although both provide appreciated results.
With regard to applications, jewelry and decoration tend to be their main destinies. It is used as surface cladding such as walls provided with a strong presence and ornamental quality. An Onyx-covered wall is a great decorated canvas, with enough presence to be a great natural artistic work. Polished in both faces, it is a luminance resource that allows passing light sifted and colored.
Due to its fragility and low-atmospheric resistance, it is usually necessary to be reinforced it is not suitable for deterioration surfaces. It is used in indoor away from humidity and direct aggression.