Architectural tiles of the 15th century are one of the most impressive types of pottery production of that period. The buildings were decorated in such a way that the brick wall was often completely covered with tiles. Tiles differed from each other in appearance and production method.
Five diamond-shaped pentagonal tiles are kept in the Fitzwilliam Museum in Britain. Each tile was painted in such a way that no oil paint crossed the boundary marked with a black line on the white glaze. In the final stage of production, the surface was decorated with gilding using a thin sheet of gold. Currently, it is almost completely lost. The method of double annealing of a drawing (pattern) with a hard-to-melt black paint composition, painted around the surface, is often called seka (literally "dry string" or more precisely, "black contour method") in kuer.
Tiles of similar shapes were part of the tile decorations on the walls of the Giyasia Madrasah. This magnificently decorated building was built in Khargird, not far from his birthplace, in 864/1442 - 1443 by order of Shahrukh's vizier Pir Ahmad.
On four of the aforementioned five tiles, the inscription of their former owner, Henry Scipio Reitlinger, has been preserved. The inscription reads: "From the mausoleum of Timur's grandson, 1445." However, no information has been preserved about the existence of such a tomb either in the Shahizinda complex or in the surrounding areas.
