Please note that the posts on The Blogs are contributed by third parties. The opinions, facts and any media content in them are presented solely by the authors, and neither The Times of Israel nor its partners assume any responsibility for them. Please contact us in case of abuse. In case of abuse, For over a thousand years, the source of Biblical “tekhelet” was unknown, and we were unable to dye the fringes of our tzitzit with the special dye. Recently, however, this practice has been renewed due to research that has demonstrated that the source of this coveted dye is the ink secreted by the banded dye-murex snail.