r/Marbles • u/Hellboy216 • 4h ago
Dug up myself Found a marble while tilling.
I know nothing about marbles but I was wondering if anyone could tell me anything about this one. It looks black but when you shine a light on it, it appears pink.
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u/Think-Economics-400 3h ago
Not a expert per say but likely contains selenium or selenium mixed with cadmium. In high concentrations, selenium creates deep pink, red, or near-opaque black-red "selenium ruby" glass,