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

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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 ...
8
votes
4answers
573 views

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?
5
votes
2answers
895 views

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 ...
3
votes
4answers
354 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?
4
votes
2answers
109 views

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 ...
3
votes
1answer
212 views

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 ...
3
votes
2answers
295 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?
2
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0answers
260 views

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?