well it's quite possibly something French but I've not managed to quite work out what yet.
Here on the link is a vase in clear frosted with the same design, looks to match Sue's pattern from what I can see, but....it has a cut and polished very thick rim, and what appears to be a foot on it.
Is it an adaptation of a mould, or a variation or a remake of an old mould? no idea.
It's acid etched mark says CRISTALLERIE ROYALE DE CHAMPAGNE in I think a small mark on the base.
From what I can find out it appears that other companies may have made glass for them which was then etched with their mark. But in this case I have not managed to find out who actually made the one listed - the one I linked to names Daum in the listing (no definite id I don't think) as well as saying it is acid etched with the Cristallerie Royale de Champagne mark, but on a post on here on paperweights, Baccarat and Art Vannes have also been mentioned with others in connection with this company. Bayel is mentioned on the Cristallerie Royale de Champagne site - I don't know what the link is though. But thought this might help.
Nevertheless, perhaps we are getting closer and perhaps it was made be a French company
just need to find who now.http://www.ebay.fr/itm/MANIFIQUE-VASE-EN-PATE-DE-VERRE-DECOR-FLORAL-EN-RELIEF-DAUM-ROYALE-CHAMPAGNE-/150996838403?pt=FR_JG_C%C3%A9ramiques_Verre&hash=item23281ce803#ht_500wt_1288