Hi Ross - hope you didn't think I was being critical in a serious sense

........... sometimes the words we use (all of us), can be less than clear in meaning to others, and crystal has always been one of those .......... in truth I'd like to see it confined to lead content glass, as in 'Lead Crystal' - and of course the use of simply the word glass might not convey very much, since all of what we collect is 'glass'. There appears to have been a habit of using 'crystal' to describe clear glass - whether there was a lead content, or not.
Regret I've no knowledge as to why the type of Stuart glass discussed in this thread should show a range of densities/weights - this might imply a lead content, or not - perhaps some silica has a greater density than others? Obviously, thickness will cause similar shaped pieces to differ in weight, but if as you're saying they are 'same shape and size', then it seems to rule out that suggestion, unless small thickness variations might be the culprit.
As a purely uneducated guess, I wouldn't have thought those pieces shown here were made with lead, but I could be very wrong - would be good if someone can comment on that. Unfortunately, I no longer have any pieces from this general range, but occurs to me to wonder if someone might put a u.v. torch over some of their clear pieces - I seem to remember something about lead showing up as grey/blue and a yellowish colour if it's absent - we had acres of discussion on this topic, but it was at least ten years ago.
............ and still looking for a Stuart label that says 'lead crystal'
