Onyx is the popular name for a variety of mineral chalcedony. Onyx is classified as a semi-precious rock-cladding material that has been known to mankind since ancient times, and its colouration varies widely. In the past, it was mainly used to make jewellery and ornaments. In construction, it is used for the production of decorative claddings, countertops, sinks, bathroom countertops, bar-tops, tables, and various architectural elements and products according to a designer project. Thanks to its translucency, onyx looks extremely beautiful in combination with hidden lighting.