This tourmaline has been a very controversial gemstone. The colour is of a cyan colour, greenish blue (or clear ocean blue). Under absorption spectrum, it has a copper absorption band.
Monday, November 17, 2008
Paraiba Tourmaline
This tourmaline has been a very controversial gemstone. The colour is of a cyan colour, greenish blue (or clear ocean blue). Under absorption spectrum, it has a copper absorption band.
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