Sorry.
It's not a "tilma" as in cactus fiber cloth, either.
Just ask the bishop of Mexico City (who was ex-communicated for telling the truth, as best as he could determine after careful exploration of the issues).
He wrote a book about it, though I do not at this time recall the title.
What makes you an expert? Something you read on the Internet?
Your OPINION only.
Where are you getting this false information?