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الشخص الذي يمكن الاتصال به Ms. emma
Xianjing Industrial District,, zhangzhou, fujian
Dichroscopes show whether or not a stone is dichroic (reflects 2 colors). This can be helpful in differentiating stones of the same color from one another. Dichroscopes can be useful with identifying gemstones that are still in the rough and when stones are set and difficult to get to with other instruments.