Hi Bill, thanks for that. I have corresponded with Ron before - he kindly confirmed ID on a pair of goblets I bought a while back. So I will send him a photo.
The weight arrived on Friday so I have just taken some photos which I will post here. It is much more orange and green than it appeared in the sellers photos, but having looked at my book and also on the web I still don't know what it is.
It is almost transparent - ie not a white background like the Kyoto range
It is quite heavily fumed - quite iridescent
the green spots are two different shades, an emerald type green and a more turquiosey green.
the amber/brown/rust coloured spots are all the same colour
the black looking spots are in fact a very very deep purple/blue
the trails of colour are almost incised into the surface -where they meet at the base they can actually be felt, but sunken into the glass, not raised out.
would love to opinions from anyone interested.
regards
Jackie