Thank you for all for your replies.
Firstly how do I change the title?...I'll put my shortcomings on colour description down to the festive season
The appearance is a vase although could it be some kind of bon bon dish?
It is in fact clear and not green and I aquired it from a charity shop with some other pieces , one of which was a Brockwitz Serphant Bowl and a very heavy cut whiskey / wine glass.
I came back a week later for this ''rocket fin' piece after having identified the Serphant Bowl.
I really am a very new collector so feel quite lucky to have trusted my instinct on things I simply like or worse still fall in love with.
Thank you for the photographic compliment.