Antique glass bottles made with manganese dioxide which turned the bottles purple when exposed to the sun.… | Antique glass bottles, Antique glass, Glass collection
manganese glass? we found this UV glowing glass at the thrift store, it's clear in regular light : r/uraniumglass
History of Purple Bottles: Interesting Facts About This Mystic Color
My collection of vintage UV-reactive glass. Includes uranium, cadmium, manganese, and more. (Friend suggested I post it here!) : r/glasscollecting