THANKS J.S.
http://www.ancient-origins.net/news-history-archaeology/ancient-textile-may-contain-biblical-blue-dye-lost-1300-years-001188#.UsSS7FuFKcY.facebook
An extremely rare blue dye which adorned the robes of kings, priests, and Jews in ancient times, and which was lost to the world nearly 1,300 years ago, is believed to have been found on a 2,000-year-old piece of fabric found near the Dead Sea.
In accordance with a Torah commandment, the ancient biblical blue dye, known as tekhelet, was used to colour the tassels of the four-cornered garment worn by men, as well as the clothing worn by the High Priest during the days of the temple. The Bible in the book of Numbers relates God’s charge to Moses:
Speak to the children of Israel, and bid them make fringes in the corners of their garments throughout their generations, putting upon the fringe of each corner a thread of blue. And it shall be unto you for a fringe, that you may look upon it and remember all the commandments of the Lord, and do them