Posted 10 years ago
kivatinitz
(342 items)
This small tumblers are, here call vasos de pulpería to ingest caña a popular distillated drink from sugar cane, known as firing glasses. They have a very pale purple tinge under sun or fluorescent light (second and third picture), they glows a little in yellow under black light (last picture) and glows white under germicide lamp. I am very confused about it but I speculate that it is because they have manganese as decolorant. They are heavy, bell shape of thick glass with rough pontil, they are 6 cm high. Dorita give it to me as a present because we bought several small things two days ago, as a YAPA, without translation. Most probably, they were produced in England before 1880. In the first picture you can compare the bright green fluorescence of the Vaseline goblet (England 1850) and the Bohemian glass with bright manganese amber foot (1920).
Hi kivatinitz, i have some glass which glows faintly like this and can have a purple tinge in sunlight. It made me read up on 'purple ing', i couldn't believe to read some people nuke glass in microwave ovens to deliberately turn them purple & as weirdpuckett says, not a nice purple either...why?? Great post. Thanks.
Thanks for your comment Vintagefran