In the texts on the box, each goddess was associated with one of the Four Sons of Horus who protected the four internal organs that were removed during mummification and were stored in the jars inside the box. Ruiu's four canopic jars are made of buff-colored clay. ... The text on each jar was incised and painted blue.

Is canopic jars ancient art?

Canopic jars were used by ancient Egyptians during the mummification process to store viscerals for the after life, and were commonly made of limestone, pottery, wood, or bronze.

What were canopic jars made out of?

Egyptian Mummification

Canopic jars were made from a variety of materials, including stone, wood, pottery, and glazed composition. Jars of the Old Kingdom had very simple lids. Middle Kingdom jars have lids that resemble human heads.