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    Topaz

    Topaz is a silicate mineral of aluminium and fluorine. Topaz is one of the hardest naturally occurring minerals (Mohs hardness of 8) and is the hardest of any silicate mineral. Orange topaz, also known as precious topaz, is the traditional November birthstone, the symbol of friendship, and the state gemstone of Utah. Topaz is thought to encourage self-confidence and help to promote a positive self-image, as well as reduce fears and anxiety.