Post subject: Any Example of before-after heating cuprian tourmaline?
Posted: Thu Oct 27, 2022 7:43 am
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Joined: Sat Feb 19, 2022 9:52 am Posts: 17
Is there any examples of before-after heating cuprian tourmaline? is there any particular shade of purple that will produce greenish-blue or bluish green cuprian tourmaline? Pics will be very helpful
However I would not rely just on color alone. Using a digital Spectrometer, I would first want to verify that Copper is present in amounts large enough to induce color.
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