This fabric is lightweight and drapes very ... drapily? It appears to be wrinkle-proof. Slightly translucent. It would make a nice dress or blouse.

It is slightly textured rather than smooth. This can be seen best by looking at the selvage in the 4th pic,

The piece measures a bit over four yards long and has not been cut or otherwise used.

Along the selvage it says MM Fab Inc.

I believe it to be polyester, though it's possible it could be some other synthetic fiber.