There are numerous different stone systems. Due to the wide variety of application areas, they differ in their format, construction material type, physical and mechanical qualities. They are pressure-resistant, thermally insulating, heat accumulating, noise insulating, frost resistant, resistant against driving rain, lightweight or able to bear loads. The artificial stones can be separated into the following main groups:

Building bricks are formed and fired from clay, loam or clay-like substances. The most well-known of these are:

• Solid brick
• Hollow brick (vertical/horizontal coring)
• Facing brick (frost-resistant, for unplastered exterior walls)
• Clinker brick (sintered surface, frost-resistant, for exposed masonry)
• Lightweight perforated brick (with additives to increase thermal insulation and/or Perlite insulation core in the hollow chambers)
• High-strength bricks (for high levels of strain)
• Ceramic clinker bricks (made of high-quality raw materials)