Ablaq

Ablaq (Arabic: أبلق; particolored; literally 'piebald') is an architectural technique involving alternating or fluctuating rows of light and dark stone. It is an Arabic term describing a technique associated with Islamic architecture in the Arab world. It may have its origins in earlier Byzantine architecture in the region, where alternating layers of white stone and orange brick were used in construction. The technique is used primarily for decorative effect.