I will post the label now, as the name on the label is a designer, indicating who "designed" the piece. It still does not indicate the house that produced it, but it is not Italian in origin for sure. The base on the one I have missing the label, and this labeled example, are both a kind of matte finish, as with some of the slightly nicer Chinese glass. It is not as poorly finished as much of the older Chinese bases were. I can not say for sure that the vase is Chinese, as I can not find any information indicating the origins, or who the company that sold these sourced them from. This label appears on Glass, Ceramics, Dinnerware, etc. All designed by Larry Laslo. The lable on the base reads "Laslo for Mikasa"
So the many Seguso Pillow vases I have seen through the years, although there may have been a piece of Italian glass in there somewhere, have actually been Mikasa vases.
The Seguso pillow vase is larger than this piece, has more defined ribs, and fewer of them. there is a definite similarity, and to the untrained collectors eye, the Mikasa vase is a good look alike. Looks to me like Larry Laslo mirrored the design.