Glass: Questions about 4" Hobnail Opalescent Vinegar Cruet

[purplefever]

Hi Glassies. I have a couple of questions about a little 4" light blue opalescent Hobnail vinegar cruet. The questions are about the age and why it has a slight fluorescence under UV light.

The bottom has a pontil mark in the center of a swirl, slight roughness. I was surprised to see it show a muddy green color under UV light. Does that indicate iron or manganese in the glass?

Thanks,

Bill

[antiqye1]

I always thought that when  glass glows under a black light, it's got uranium in it. Google it & see.  I've got a miniature vase like your item, but don't remember who the maker is, sorry.

[purplefever]

Thanks, antiqye1. I'm familiar with the bright uranium green from Depression glass. I thought a little fluorescence might indicate an older glass composition. Bill

[donsdetour · Accepted solution]

fenton opalescent hobnail cruet.

[purplefever]

donsdetour: Thanks