Sculpting and building with sandstone is a major business and craft due to the material’s abundance in the mountains. Various types of sculptures as well as building blocks are created from it. In the communities of Escolásticas and Ejido de Ajuchitlancito in the Pedro Escobedo municipality, families, associations and cooperatives work with the stone. The work from Pedro Escobedo has been exported for many years. Various communities in the Huimilpan municipality do as well. The items create range from ashtrays to large columns for buildings. Much of the stonework of La Cañada in the El Marqués municipality is exported. Another stone that is worked is marble, especially in Vizarrón in Cadereyta municipality and in Tequisquiapan. Onyx, marble, opal and turquoise are worked in San Juan del Río and in the capital city. Opals are mined in the state and come in a variety of colors and sizes. They are mostly made into jewelry.