These can include corner cuts such as slants, arrows, modified southwestern arrow, oriental kobe, floral, or kobe Persian to name a few. Choose a circle, oval, arch, contemporary dome, diamond, or multi-sided mat. V-Grooves are cuts into the surface of the mat to expose the mat core; a subtle accent if the core is white or more dramatic if the core is black. A specialty cut can also be a stylized flower or freeform design cut all the way through the mat.