Type   quartz
    Chemical Composition   Silicon dioxide (SiO2)
    Color   violet with blue, violet with red
    Pleochroism   dark yellow and pale yellow
    R.I.   1.533-1.554
    Specific Gravity   2.63-2.65
    Hardness   7

 
 
    Amethyst is well known and has been used in making jewelry for a very long time. It is still important today and it is said that Amethyst is the most popular variety of quartz. the word amethystcomes from a Greek word which means "not drunk". Ancient Greek people believed that wearing amethyst jewelry protected a person from becoming intoxicated. The violet color of amethyst come the presence of Iron in the crystal structure. The must important sources of amethyst are Russia, Uruguay, Madagascar and Zambia.
    
 
 
 
 
       

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