Poisonous Gems

 

  
There are a number of gems that are actually poisonous. Because of their chemical contents, 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 Radioactive gems for other gems with Health Warnings.