Tri coloured tourmaline on quartzHaving explored some other hues of multicoloured tourmaline in two
Tri coloured tourmaline on quartzHaving explored some other hues of multicoloured tourmaline in two recent posts (seehttp://tinyurl.com/mmtsbdd andhttp://tinyurl.com/kt4d2qc), we thought we’d widen the scope to these lovely green, orange and yellow crystals. While the colours are due to iron, they differ because of different distortions in the crystal lattice formed by a mixture of impurities. LozImage credit: Reno Chris -- source link
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