Whilst to make this silk (a tailoring affair) is dangerous to have to collect the materials, the fact is, you literally only need two glands of the stuff. Two. Not two adamantine ingots or, two magi brains or anything like that. Just, two of these glands, and you'll have recovered what you lost.
I'm not trying to downplay that it's unfortunate people may need to farm back up what was removed, but I will say it's isn't some grueling affair like some of the other materials out there. Also easily with renewed interest in it, people will probably make higher efforts to farm the stuff to get money out of it.
Not to OOC shill myself or anything, but the tailors are out there to make you these silks. Just seek them out.