Israeli archaeologists working in the Judean Desert have discovered the earliest evidence of Biblical scarlet dye, the Israel Antiquities Authority announced on Thursday.
The rare textile, 3,800 years old and less than two centimeters in size, was uncovered in the “Cave of Skulls” northeast of Jerusalem. This excavation aims to preserve heritage finds and prevent antiquities theft. The woolen weft threads were dyed red, while the linen warp threads remained uncolored.
Carbon-14 analysis dated the textile to the Middle Bronze Age (1767-1954 BCE).
According to a new joint study by the Israel Antiquities Authority, Bar-Ilan University, and the Hebrew University of Jerusalem, the textile’s scarlet color was produced from the oak scale insects, identified by the researchers as the Biblical scarlet worm Tola’at Hashani. The scarlet-red color, mentioned in the Bible alongside royal blue tekheilet and purple argaman, is considered one of the ancient world’s most precious and expensive dyes, used according to the biblical commandment to dye the fabrics of the Tabernacle and the priestly garments.
Using advanced analytical methods, including High-Performance Liquid Chromatography to identify the dye’s origin, the researchers concluded that the red hue came from the Kermes vermilio species, known for producing kermesic acid, which imparts the distinctive red color. The findings were recently published in the peer-reviewed Journal of Archaeological Science: Reports.
“In ancient times, the dye was produced from the female scale insect, which lives on the kermes oak tree (Quercus coccifera),” explained Dr. Na’ama Sukenik, Curator of the Organic Material Collection at the Israel Antiquities Authority. “Collecting these kermes was done in a very short window of time—one month out of the year, in the summer, after the female laid her eggs but before they hatched—when the amount of dye was greatest. The short period in which the kermes could be collected, the difficulty in finding them due to their small size, between 3-8 mm, and their camouflage colors made it difficult to locate them,” Sukenik added.
The amount of dye that could be produced from the eggs was limited, but “the beautiful scarlet hue that can be produced from them for dyeing textiles made their use highly prestigious,” Sukenik noted.
The discovery also underscores the interconnectedness of ancient societies. Despite the presence of a native species of scale insect in Israel capable of producing a red-orange color, the researchers found that the textile’s dye came from a species common in the central and eastern Mediterranean region, indicating extensive trade networks, the researchers said.
