can you tell real wool from fake wool

[Lallans]

This takes me back to a great Christmas when I got a Gilbert microscope and, not having any bio samples handy, went around identifying fibres all over the house (CSI style). I assume though that you don't have a microscope handy.

Lacking a Gilbert Crimebuster set, I suspect it takes a while to develop a 'feel' for wool vs synthetics but if you can find one garment made of each and do a side-by-side (-by-side) comparison with your new kilt, that might help. If you have a woman handy they can probably tell you right away. Or, if you want to do a guy thing, I think you had the germ of an idea in your OP: If you can find a seam on the back of the kilt and isolate or extract a few threads, try exposing them to a small flame. If they burn and char, it's wool (or at least some natural material). If they melt, it's not wool. If the kilt goes up in flames, hey Dude, it was your idea in the first place! -but it wouldn't have been a safe garment to wear anyway.