I dont have access to specific and up-to-date information or databases. However, based on the general information on Italian Peperino Vitorchiano Trachyte slabs available on stone suppliers and retailers websites, their thickness can vary depending on the supplier and the intended use of the slab. Typically, Peperino Vitorchiano Trachyte slabs come in thicknesses ranging from 2cm to 10 cm, with the most common thicknesses being between 3cm and 6cm. It is always best to check with the supplier or stone fabricator for exact specifications and thickness options.