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Blue topaz ct.34.65



211,06 €

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Blue topaz ct.34.65

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BLUE TOPAZ Most of the topaz in the marked are irradiated and heated, Starting from a colorless material, become brown after irradiation and then blue after heating at 500 C° There is also a natural blue topaz coming from India,Brazil,Nigeria,but is quite rare and difficult to separate from an irradiated one. This gem here has been treated many years ago and the color is stable and safe. Location: Nigeria Size:22.4x18x12.9 mm. Weight: 34.65 ct. CODE# 2402

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