Hi Azelismia, thanks for your comments
and what a fabulous site you have - thanks for the link.
I have not been able to find a complete match on shape with either Harrach vases or Loetz vases. I feel pretty sure the decor (marbling) on this is the same as many vases I have looked at, identified as Loetz Carneol Marmoriertes. I suppose it doesn't mean they all are Loetz but I've assumed if they are a firm id that they have been matched to the Loetz known shapes for this decor. Assuming is not good I know.
I also assumed Truitt's would have done a match with the documented Loetz shapes for the pieces they have pictured.
In Truitt's page 87, my vase is the closest in shape and a match for the decor to the vase pictured top right no1.
Where it doesn't match the Truitt description is:
1) they say the early vases were coloured glass over clear and used no uranium (my vase is coloured glass over white and uses no uranium)
2) they say by 1890 the glass had a pink or white lining and the white striping of the glass contained uranium salts (my vase has a white lining but doesn't contain uranium salts)
I assume again, that they have tested this theory with all the vases they have pictured and that they are sure that no Loetz Carneol Marmoriertes was produced with a white interior but not containing uranium.
I'm interested to see if there are any Loetz Marmoriertes piece out there with a white or pink interior that do not contain uranium. If there are then either a) this disproves what they have said or b) the vases are not Loetz.
So, if they have proved this theory and all are documented Loetz shapes, then no, my vase does not fit their criteria, but yes, it has a matching decor.
I would think that for my vase to be classified as Loetz I need to be able to match the shape to a documented Loetz shape for it and I don't have access to that data.
If it is Harrach, then I think it poses an interesting debate in that the decor is the same as the Loetz Carneol Marmoriertes. I think it could also call into question other pieces id as Loetz in this colour and decor.
Thanks again very much for taking the time to reply. It is much appreciated.