There
are a number of gems that could be considered to be
poisonous. Because
of their chemical content, these gems are poisonous
to some degree.
Among the elements that make these gems poisonous are
Arsenic, Lead, Mercury and Sodium Fluorine. Most of
these gems are safe under normal circumstances but all should be handled with caution. Always wash hands after handling.
Also see the Radioactive
Gems information page for other gems with Health
Warnings.
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