Zellige Petrol. For Stiltjes Zellige Collection we have taken out the most beautiful colors and the best "tile artists" to create our collection. The mosaic or tile is fully crafted according to traditional Moroccan methods and varies in color and texture. The Mosaic 5 × 5 comes on finished 20 × 20 cm flaps, the thickness of the flake varies but count 1,5-2 cm for the setting. The tile 10 × 10 cm comes as loose tiles. The plates have cut edges and there are tiles away from the glaze.The plates are very uneven and the edges NOT straight. We go through each plate we ship and damage and irregularities like this do NOT give rise to complaints. It is the natural charm of Zellige that does not go (and we do not want to) avoid.