Vintage student lamp shade, pressed glass in a quilt pattern, old milk glass. This is a vintage replacement shade, new old stock from the collection of a small town lamps and lighting shop.
The shade measures 5" tall, 5 3/4" at the fitter, about 6 1/2" in diameter overall. There's some roughness to the fitter edge left from the manufacting process, otherwise excellent, it's never been used.