Tourmaline. The specimen at bottom left is in its natural state, the other specimens have been polished. Tourmaline is a silicate mineral that can occ

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Tourmaline. The specimen at bottom left is in its natural state, the other specimens have been polished. Tourmaline is a silicate mineral that can occur in several colours.

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Size: 5315px × 5315px
Photo credit: © PAUL BIDDLE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -life, background, black, crystal, crystals, cut, cut-, cut-outs, cutout, cutouts, gem, gemstone, geological, geology, life, mineral, mineralogy, natural, outs, pleochroic, polished, raw, rock, section, silicate, slice, specimen, specimens, stone, tourmaline, unpolished