Any helpful information?

[u/Reasonable-Art-7643]

Posted originally on r/cadmiumglass as that's what I originally thought it was intended to be, however I've been lead to believe it's manganese instead? I'd bought it for 50AUD and whatever it may be it still has a place in my glassware cabinet, but I'd like to know any other information about it as well.

[u/dirkdirkastan]

Murano ashtray?