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If no black tourmalines are admixed with dravite, what causes much darker color in your recent tourmaline sample, compared to the original tourmaline powder sample?

April 26, 2017Black causes color darker dravite recent sample Tourmaline

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If no black tourmalines are admixed with dravite, what causes much darker color in your recent tourmaline sample, compared to the original tourmaline powder sample?

1 Answer

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The sample we sent you last time, in fact, includes about 60% black tourmalines, 30% ~ 40% dravite. So, it looked a little darker. But, the color you wanted is not a problem. The key is the function and ingredients percentage of the powder.