Hi Sue, thanks for your reply, just when I was beginning to think that it could be a Harrachov 'second' - because of the similarities in bubble shape and size

I'm afraid I find it virtually impossible to capture on camera clear bubble ( or cut ) glass accurately.
Everything always seems to come out a jumbled mess !
To be fair to this vase, apart from a few of the bubbles which have obviously strayed, the majority of them appear to be where they should be.
Like you, because of its weight, I think it's probably Chinese.
The only other 6 kg piece I was able to find was one being sold by Amazon - a Murano Style vase/bowl
by Aubaho.
If it is Chinese then they seem to be getting their act together because I'm pretty sure this one's been made from lead glass - you can see rainbow colours if it's held up ( saves using my weights ! ) to the light.
Quite honestly, even if it had had a ' Made in China ' label I'd have probably have bought it - really !
Many thanks for your reply

Scott