Thanks m & Peter very much for your comments.
m, it's a very justifiable view point ....and I'm seriously considering it !
Peter, I wholeheartedly agree with you ! I really thank you for your suggestion !
I entirely understand the fact that matching the colour of the glass is a real problem and that resin is the only cheaper solution .
The only last point I wish to make is that it might be possible to make a high silicon-content/plaster section of the vase and then use that to attach and form a glass handle (as I suggested above) . I think a lost wax method would produce a matt finish which would be too difficult to polish. It's an idea that I thought could possibly work , I might well go down that line of thought and see if it works on any colour of glass (blue perhaps

) . But it will just be an experiment in that colour. If it works it will be interesting

Failing this, I hope I will be able to follow your sound advice ,Peter , and have a resin handle made

...I promise to post photos if so !!
Thanks for all your comments and suggestions, I really do appreciate it, and I promise ....I haven't lost the plot !!
Cheers, Mike.