How was this made?
The piece is carved in two planes, high and low relief. The primary elements are Abraham, Isaac, the altar, the angel, tree, ram, the cloud, and the hand of God. They are all executed in high relief, meaning that the design is strongly projected from the background. The floral motif is carved in low relief. The large palm in the upper center moves from background into foreground linking the two planes. Palm leaves were a sign of the journey to Jerusalem, where the sacrifice of Isaac took place.
The wood was originally covered with gesso and gilded. Gesso is a mix of animal glue and chalk, and it provides a smooth surface onto which gold leaf is applied. Remains of gold leaf can be seen on the most important parts of the image: the altar, Abraham's halo and robe, the ram, and the angel.
The small, portable tools used to create this wooden relief would have been easy to lose. Many ivory relief carvings from the same time period contain similar carving strategies and features to the Sacrifice of Isaac. These similar ivory carvings were made using small tools such as axes, chisels, and adzes. These tools could have also been used to create carvings made out of wood.The Morgan Casket, displayed in the Metropolitan Museum of Art, is an ivory relief box made between the 11th and 12th centuries in southern Italy that is reminiscent of art from the Fatimids, an Islamic community. While the Sacrifice of Isaac is one panel separated from others, the Morgan Casket joins together nine different panels. It can also be compared to the Sacrifice of Isaac by looking at its high and low relief components and its incorporation of figural patterns.