To date, only two pieces of fabric treated with actual dye-murex have been found in Israel

The fabrics identified by Dr. Na‘ama Sukenik of the Israel Antiquities Authority represent the most prestigious colors in antiquity: indigo, purple and crimson, which are mentioned in Jewish sources

Thousands of fabrics dating to the Roman period have been discovered in the Judean Desert and regions of the Negev and the ‘Arava. So far only two were colored with dye extracted from the murex snail. Now, within the framework of a study conducted by Dr. Na‘ama Sukenik of the Israel Antiquities Authority, three other rare fabrics belonging to pieces of prestigious textiles were exposed that might have been used as clothing in the Roman period.

Dr. Sukenik’s doctoral dissertation was supervised by Professor Zohar Amar of the Department of the Land of Israel Studies and Archaeology and Dr. David Illuz of the Department of Life Sciences at Bar-Ilan University. The textiles were examined by Dr. Orit Shamir, Curator of Organic Materials at the Israel Antiquities Authority.

These prestigious textiles, from the Wadi Murabba‘at caves located south of Qumran, were revealed in a study that analysis the dye of 180 textiles specimens from the Judean Desert caves. Among the many textiles, most of which were dyed using substances derived from plants, were two purple-bordeaux colored textiles – parts of tunics that were double dyed utilizing two of the most expensive materials in antiquity: Murex trunculus (Hexaplex trunculus) and American Cochineal insect .

A third textile, made of wool, indicating the thread fibers were dyed by exposing them to sunlight or heated after having been dyed, represent another use of the murex snail for achieving a shade of blue, and it is possible that the item in question is an indigo fabric made by means of a technique similar to making the tekhelet (blue)in a tzitzit.
The importance of this fabric is extremely significant as there are practically no parallels for it in the archaeological record.

Dr. Sukenik, assisted by Dr. Alexander Varvak, examined the colors using advanced analytical instrumentation for identifying dye substances (HPLC).

The testing of the fabrics, performed by Dr. Orit Shamir of the Israel Antiquities Authority, revealed that the two purple textiles were spinning in a unique manner characteristic of imported textiles, whereas the blue textile was spinning in the same fashion as the local textiles.

Of all of the dyes that were in use, purple is considered the most prestigious color of the earlier periods; however it seems the public’s fondness for this reached its peak in the Hellenistic-Roman period. The purple dyed fabrics attested to the prestige of the garment and the social status of its owner. There were times when the masses were forbidden from dressing in purple clothing, which was reserved for only the emperor and his family. These measures only served to increase the popularity of that color, the price of which soared and was equal to that of gold.
It is difficult to know for certain how such prestigious fabrics came to be in the Murabba‘at caves. They might have been part of the property belonging to Jewish refugees from the time of the Bar-Kokhba revolt and demonstrate their economic prosperity prior to the outbreak of the uprising.
Another possibility is that they were part of the possessions of a small Roman unit, which on the basis of the artifacts was stationed in the Murabba‘at caves following the Bar Kokhba revolt. It is likely these same soldiers brought some of their belongings from overseas to Israel and others they purchased from the local Jewish population during their service in the country.

The three fabrics shed light on the Murabba‘at caves and represent the most prestigious colors in antiquity: indigo, purple and crimson.