Just because something is expensive, or deemed to have value, doesn't always mean it should be something to be had. That's something Capt'n John learned in his research for the most expensive fabrics and brings us to fabric number two, Shahtoosh, which comes from the "wool of the Tibetan antelope, also known as the chiru." It has been illegal to harvest Shahtoosh since 1975. Why you may ask? Read on through to discover why this fabric is so valuable but is no longer allowed to be used or gathered.