|I was reading a classified, and realized that many people do not know a simple way to tell a natural fiber from a synthetic /blend.
Cut a small sample.I like it to be a wedge about about
1 1/2 "X 1/2"
Put the wide end into a pear of tweezers.
Hold it over a fire safe area. (I us the top of the freezer)
Light the thin part of the fabric, and let it burn for a short time.
If it is a natural fiber..silk,cotton,wool.rayon, linen.
you will only have ash. If there is synthetic in it, it will have a ball or lump in the burnt remains.
You can, with time and practice, tell the content by the burn and the smell and the smoke, but I am not qualified to explain that.