manganese glass? we found this UV glowing glass at the thrift store, it's clear in regular light : r/uraniumglass
Manganese 2+ doped fluorescent glass bead NEW!
Just a few of my late 1800/ early 1900 colorless glass items. Manganese is likely the cause of the faint yellow/green glow. Glass is fun. : r/glasscollecting
History of Purple Bottles: Interesting Facts About This Mystic Color
Antique glass bottles made with manganese dioxide which turned the bottles purple when exposed to the sun.… | Antique glass bottles, Antique glass, Glass collection