It seems odd that something like the tradition for techeles could have been lost. It seems unlikely that Jews just stopped using techeles at some point and then immediately forgot. Are there no ...
http://en.wikipedia.org/wiki/Tyrian_purple and http://en.wikipedia.org/wiki/Iles_Purpuraires show that blue dye was produced from the murex in ancient times in these locations. But on Ptil Tekhelet's ...