Do the authors of this article have any idea where the silk was produced? We already know that the Mediterranean island of Cos made silk in ancient times. However, it wasn’t as good as Chinese silk, so when silk from China became available, the Coan silk industry went out of business.
Due to their reliance on the conventional pseudochronology, they’ve already dated it wrong, so, possibly not. :^)
https://en.wikipedia.org/wiki/Coa_vestis