However, the Najd fretwork seems very different from that seen in the Eastern Province and Oman, which are linked to Indian traditions, and rather resembles the motifs and patterns found in ancient Mesopotamia. The rosette, the star, the triangle and the stepped pinnacle pattern of dadoes are all ancient patterns, and can be found all over the Middle East of antiquity. Qassim seems to be the home of this art, and there it is normally worked in hard white plaster (though what you see is usually begrimed by the smoke of the coffee hearth).