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Variations in colours of "Tyrian purple" from different snails are related to the presence of indigo dye (blue), 6-bromoindigo (purple), and the red 6,6'-dibromoindigo. Additional changes in colour can be induced by debromination from light exposure (as is the case for Tekhelet ) or by heat processing. [ 39 ]
A demonstration of the production of the blue dye using sunlight to produce the blue colour is shown. The dye is extracted from the hypobranchial gland of H. trunculus snails. [43] Chemically, exposure to sunlight turns the red 6,6'-dibromoindigo in snails into a mixture of blue indigo dye and blue-purple 6-bromoindigo.
The deep, rich purple dye made from this snail became known as Tyrian purple. [14] The process of making the dye was long, difficult and expensive. Thousands of the tiny snails had to be found, their shells cracked, the snail removed. Mountains of empty shells have been found at the ancient sites of Sidon and Tyre.
Tyrian purple is often described as being a deep reddish purple in ancient Roman times, but depending on the snail used and the amount of heat exposure, the shade could range from a dark indigo to ...
A Phoenician coin depicting the legend of the dog biting the sea snail.. In antiqutiy, the city of Tyre was famours for its industrial production of tyrian purple, an extremely rare and expensive dye; [9] tyrian purple was renowned for its unique beauty and lightfast qualities. [10]
Dyes have incited murder and subterfuge, made and lost fortunes and turned clothes into a status symbol for thousands of years. A new book examines why.
A similar dye, Tyrian purple, which is purple-red in color, was made from a related species of marine snail, Murex brandaris. This dye (alternatively known as imperial purple, see purple) was also prohibitively expensive. Jews may have used the pigment from the shells to create a sky-blue, tekhelet, dye to put on the fringes that the Torah ...
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