The Murex Trunculus Underwater

Being Taken Out of the Sea

Attached to Rocks

Close Up

Being Cracked Open

Cracked Open

Cracked Open

Cracked Open

דם חלזון

The Wool Being Dyed

ונתנו על ציצית הכנף פתיל תכלת


The Torah commands us to place strings of ציצית with a strand of Techeiles – תכלת (alternate spellings include: Techailes, t’cheiles, t’chelet, techelet and tekhelet and more…) upon our four cornered garments.

On this site we welcome you to explore the identity of the חלזון and תכלת, and the reason for its disappearance. We hope you will discover that today we can once again produce this ancient dye, and finally practice this long lost מצוה.



Shiur Series – Techeiles in Our Time – R’ Avrohom Gross


ראשי פרקים לשיעור תכלת בזמנינו Shiur 1 Techeiles and its rRediscovery Introduction What is Techeiles? Is it possible to rediscover תכלת or was it נגנז לעתיד לבא? The search for Techeiles SEE HERE Shiur 2 Part 1- Simanim and Common Sense Introduction to using simanim as a source of identification Abstract Logic vs. Common Sense […]

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Techeiles Yom Iyun Sunday, January 3rd 2021 – 19 Teves 5781


When: Sunday, January 3, 2021 @ 10 AM-1 PM EST / 5 PM-8 PM IST Where: TorahAnytime: Or call (more details below) . Questions when watching that channel can be typed up here: Zoom: link here (more details below) Note: due to possible Technical concerns, the exact details regarding the above channels and […]

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Rav Asher Weiss Shlit”a: No Down Side to Wearing Murex Techeiles


Rav Asher Weiss Shlit"a is of the opinion that the murex is not the correct source for techeiles. In this recent shiur, Rav Weiss make it very clear that if one does wear murex, there is no down side.

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Here you will find various Seforim, Shiurim, Articles, and original Sources on the topic of תכלת.

Submissions are welcome.