close
    What does a heat treatment do to a tourmaline gem stone?

    0  Views: 1137 Answers: 1 Posted: 12 years ago

    1 Answer

    Green tourmaline is often heated to lighten color in over saturated gems, like those commonly seen in Brazil. Other tourmalines are heated to alter one of the dichroic colors.


    from:  http://www.moregems.com/heat_treatment_of_gems



    Top contributors in Uncategorized category

     
    ROMOS
    Answers: 18061 / Questions: 154
    Karma: 1101K
     
    Colleen
    Answers: 47270 / Questions: 115
    Karma: 953K
     
    country bumpkin
    Answers: 11322 / Questions: 160
    Karma: 838K
     
    Benthere
    Answers: 2392 / Questions: 30
    Karma: 760K
    > Top contributors chart
    452713
    questions
    719867
    answers
    755791
    users