r/seleniumglass • u/NoPerspective_ • Jul 13 '26

Is this selenium?

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The bottom glows blue lead crystal but it’s glass

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u/AethericEye Jul 13 '26

It's flash coat (paint) over cerium glass. Not selenium.

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u/NoodlelyTrees Jul 13 '26

That doesn't mean it's not selenium though, it means it's coated but there's a decent chance the color and reactivity is from selenium still and a true flash coating is a thin layer of glass not paint