A blank, in particular a dental blank, for the production of a tooth prosthesis, includes a bed of a first material, and at least one core region which is embedded in the bed and which has a different color from the bed and includes a second material. The core region has a surface directed in the direction of the bed, and a boundary layer delimiting the bed relative to the surface of the core region is directed in the direction of the bed. The boundary layer simulates a dentine boundary between a dental enamel and a dentine, and the blank has at least two separate core regions with separate surfaces directed in the direction of the bed.