Tanzanite Ring 101: From Metal Selection and Preferred Setting to Stone’s Quality

Another thing you need to know is that the color change achieved via heating is stable and permanent, meaning it does not reverse over time as you wear it daily. Also, heat treatment never causes depreciation of value – instead, it increases the stone’s desirability and value because of the stone’s enhanced color. So yes, you should never worry if your tanzanite ring has a heat-treated stone set in it.

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