techeilet, techeles; a blue wool put to various Jewish uses

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Who hechshers P'til Tekhelet?

P'til Tekhelet is an organisation which makes M. trunculus techeilet. Who hechshers their tzitziot?
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Tucking in Tekheles

I've heard it said by some chaverim of mine, that if one is to wear tekheles on their tzizits, they should tuck it in. They say many poskim rule this way, and that the gemara brings down something ...
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How did the mesorah for techeles get lost?

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 ...
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Historical evidence that blue snail dye was produced in ancient times

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 ...
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Halachos of psil techelet [duplicate]

Does the murex which was found recently contain the actual techelet? If there's a safek wether it really is or isn't is there any harm in wearing it? Like would it pasul the tzitzis?
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Techelet on Talit Gadol not Talit Katan

I don't have the money right now to equip all of my talitot katan with techelet, but I'd like to put it on my Talit Gadol (Please, no discussion of Techelet itself - I've made up my mind on that one). ...
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Stripes on talis with techeilet

This answer mentions says that the stripes on the tallis are reminiscent of techeilet. Now, we have a few different dyes that claim to be techeilet, which many people wear. Usually, talises with ...
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Cheap Techeilet?

I follow minhag techeilet and I am on a university student's budget. Does anyone know where to get tzitziot with techeilet online for relatively little?
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Tying 7 Huliot with Techelet MiDin Safek

The Tur writes (Orah Haim 11) that since in his days they didn't have Techelet they didn't have to be Makpid on the Huliot (the Rambam doesn't agree). Therefor the Posekim hold (Rosh, Tur, SH"A etc.) ...
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Why is it Ok to have tzizit without techelet?

The Mishna in M’nachot 4:1 says that the mitzvah of the white tzizit is not gone if there is no techelet, and the mitzvah of the techelet is not gone if there is no white. That seems a straight ...
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May an Ashkenazi wear Yemenite Tzitzith?

Many Ashkenazim now wear Tzitzith with Techeleth tied in the tradition of the RaMBa"M. However, my understanding is that Ashkenazim minimally require a double-knot at the base of the tassle in order ...
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Fake Techelet: invalidating the entire Tzitzit?

Let's say I use the pretty much disproven Techelet (Radzyner) : is my Tzitzit completely Pasul? I think according to the Arizal it isn't. Does anyone disagree?
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Tcheiles on Shabbos

In the response to List of Techelet Wearers it mentions a few Gedolim that wear Tzitzis of Techeiles on Shabbos only. Why would there be a difference between Shabbos and the rest of the week?
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Mahloket Rishonim on Techelet and no Shulhan Aruch or Bet Yosef

Mahloket Rishonim how many strings should be used in the Techelet. One string (Raavad) Two strings (Rashi, Tosafot, Rosh and Tur) Half string (Rambam) In a case of an argument like this who would ...
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1answer
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Rif, Rosh, and Rambam about the Techelet

The Petil Techelet company (I believe) makes three types of colored strings: Raavad- 1 full string of blue Tosafot- 2 full strings of blue Rambam- 1/2 string of blue Does the Rif or Rosh mention ...
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HaGaon HaRav Asher Weiss Shelita and Techelet

Does anyone know if HaRav HaGaon Asher Weiss wears Techelet? Also, why or why not?
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List of Techelet Wearers

I was looking online for a list of people famous for deciding or influencing halacha, who currently wear Ptil Techelet Techelet. However I could not find one. Does such a list exist? If not, could ...
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301 views

Sefardic contemporaries for Techelet?

Are there any Sefardic Poskim today that have written a book and discuss the Techelet? If so, can you bring one that is FOR the Techelet?
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Techelet from the Kineret

Is the Murex trunculus (used by Ptil Tekhelet) found exclusively at the Kineret? Or is at found at the Kineret as well as other locations? The reason I am asking this question is because the Arizal ...
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4answers
363 views

Compelling arguments to support Techelet

I know a lot of arguments against the wearing Techelet from my research etc. and I would to now hear some arguments for the Techelet. Does anyone have any arguments that support the Techelet?
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Where can I get dark blue Techelet for my tzizit and talit?

I want to buy some techelet and white tzizit. I want the techelet to match the color in this picture and to be made by Ptil Tekhelet foundation. However, when I try to contact them on their website I ...
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Why is techeles not universally accepted?

The Machon Ptil Tekhelet has (to my mind) some pretty compelling arguments as to why the Murex Trunculus is very likely the genuine chilazon from which techeles (blue dye) for the mitzva of tzitzis is ...
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117 views

According to the Rambam, what color would most of the tzitzis strings be if the garment was all techeilet?

The majority opinion is that, when we had the tradition on techeilet (the wool-dyed-blue string on tzitzis), each corner of the garment would have 7 white strings and one techeilet string. If I've ...
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White (Lavan) & Blue (Tcheiles) - blue Tzitzis [duplicate]

There are some people that wear Tcheiles - blue Tzitzis. What is the reason that the majority of Klal Yisroel still does not wear it if the Tcheilas has been rediscovered?