Uranium glass article JS-19 polished, partially transparent. Borosilicate optical glass yellow ZhS19 - 1.37% UO3 through uranyl nitrate UO2(NO3)6H2O". Made in ex-USSR in 80-90th years.
Basically color - yellow
Luminescent - green under UV light, Electric arcs, blue laser
Radioactivity: up to 2.19 uSv/h
Dimensions 50x50x20 mm
Weight 110 g
1 lot = 1 piece
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Full books about this and other optic glass on Rus lang & Eng lang translated here: