Nancy - with the help of a very nice eBayer who was selling an identical vase to yours complete with its original box! your vase can now be identified as being - Luminarc, J.G. Durand & Cie, Arques, France. c.70s.
The vase is shown on the front of the box, holding flowers, and it looks really nice.
Regards - Anne E.B. :wink: