sometimes m I think your efforts are almost wasted on us lesser mortals - congratulations on such comprehensive work. As we've seen before in our discussions on these related C19 glass types, there seem to be almost limitless variations on what constitutes valid criteria for inclusion, leaving us to wonder how little - at times - doesn't qualify, for example, as opaline.
I'm big on taxonomy - it's comforting for me to know where something stands in the overall scheme of things - how it's classified and why - but reading many of the definitions, mostly for coloured glass relating to types where 'opal' is a prefix, leaves me feeling that almost anything qualifies.
And, herein lies a problem not only for collectors who struggle to understand this umbrella of inclusion, but at the same time gives the seller carte blanche to use as defense when accused of mis-selling.
With such a wide range of criteria, I think the op here, will struggle to convince his seller that something isn't right - and for the same reasons it's why so many folk who post here and on-line, refer to much coloured glass as opaline.
Genuine French opaline - from Baccarat for example - fetches big bucks and by association this 'worth' too often attaches to anything that's described as opaline.
In recent years the Board's links and explanations relating to similar coloured glass appear to have made it impossible now to separate original C19 forms of glass bearing 'type' descriptions from later copies and variations which are of lesser interest and value, and probably don't qualify as the genuine article. Not the least reason for this is that possibly it's no longer known how the originals were made.
thank goodness I mostly collect clear glass, though assume of course that in view of your hard work in all these areas you do know 100% more than we do.
