Ptil Tekhelet provides genuine Tekhelet strings so Jews can once again fulfill the mitzvah of wearing Tekhelet on their Tzitzit.
About 1300 years ago, the secrets of Tekhelet, this wondrous blue color and the identity of the mysterious sea creature – the Chillazon – that produced the dye was lost. Over the past half-century, a convergence of research and discoveries by Rabbis, scientists, archaeologists, and others has led to the conclusive identification of the sea-snail, Murex trunculus, as the authentic source of Tekhelet.
Tekhelet, Tradition & Redemption – Intersection of Science & Halacha
This lecture at the AJT Learning Center was given by Dr. Baruch Sterman, a co-founder of Ptil Tekhelet. Dr. Sterman is considered to be one of the world’s experts on the topic and has lectured around the world and written widely on all aspects related to Tekhelet including the halacha, history, philosophy and science. His book, The Rarest Blue, was awarded the Jewish Journal Book Prize for 2013.
The video of the talk can be seen here
Rabbi Twerski spoke in 2018 on the topic of Tekhelet and Mesorah. Listen to the lecture on our Audio Library here.
Tekhelet Overview
Find out more about the mitzvah of Tekhelet and its meaning, how Tekhelet is made and the history of its loss and rediscovery in our time
Buy Tekhelet Now
Ordering Tekhelet is simple with our online store. A large selection of pre-tied garments, strings, books and educational material
Tying Resources
Get answers as how to choose from the different string types and tying methods, what size Tallit or Tzitzit is best for you and more
New and Noteworthy
Techeiles – It’s Not All Black and White
Watch here
To Date, More Than
Sets of Tekhelet Produced

City Cloud of Tekhelet Wearers in Israel

Distribution of people wearing Tekhelet

Authorized Dealers and Tying Bureau
Find a store near you that sells Ptil Tekhelet strings. Get help from someone local who can tie the strings onto tallit or tzitzit.
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How is Tekhelet Made
Watch a short video showing the process of making Tekhelet from shearing of the sheep, the collection of the snails, extracting the dye glands and dyeing the wool, through the spinning and plying of the wool into strings to be tied onto tallit.
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Tekhelet in Your Community
Ptil Tekhelet runs workshops for schools, lectures, Scholars in Residence, Virtual lecture, and a host of other programs. Bring these fascinating programs to your community.
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Tekhelet in Your Life
From the first set of tzitzit a child puts on, through Bar Mitzvah, to the Tallit under the wedding chupah, Tekhelet accompanies the major events in the Jewish life cycle. Ptil Tekhelet has special offers to help make it part of yours.
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Tekhelet Educational Resources
Educators, Rabbis, and others can make use of a vast array of educational materials including presentations, worksheets, videos, and more — targeted to various ages and background.
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Tekhelet, Tradition & Redemption
This lecture at the AJT Learning Center will be given by Dr. Baruch Sterman, a co-founder of Ptil Tekhelet, an organization dedicated to restoring the ancient Biblical blue dye. Dr. Sterman is considered to be one of the world’s experts on the topic and has lectured around the world and written widely on all aspects related to Tekhelet including the halacha, history, philosophy and science. His book, The Rarest Blue, was awarded the Jewish Journal Book Prize for 2013.
Wednesday 11 May 2022 at 7:30 pm
7:30pm Israel time, 5:30pm UK time, 12:30pm EST, 11:30am CST
Beit Knesset Menorat Hamaor, Nachal Maor 6, Beit Shemesh
The event is for both Men and Women.
Participation is free but registration is required.
Register here: https://bit.ly/2WkXefV
Livestream option available.