Minerals & Gemstone 480x104
Minerals & Gemstone 480x104
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Glossary of Terms
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Tarnish
Property in certain minerals that cause them to discolor when placed in certain environments. The best example is Silver, which develops a yellowish-black coating on its surface when exposed to hydrogen sulfide (H2S), which is present in small quantities in the atmosphere. See also Oxidize.



Silver with Minor Tarnish



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