Thankyou Anita for your very useful reply, re. Murano bases, one of those things you don't realise you know until it's spelled out for you, now you've said it I realise that of course, every piece of murano I've ever had like this has had a polished base.Must admit I was thinking along Murano lines. Also didn't know the name for the colour. I think wherever it's from it's a fairly nifty piece of work. Bet Ivo , or another clever person knows...... Thanks again, cheers, Gill