• Tourmaline
  • Tourmaline
  • Tourmaline
Gem Minerals

Tourmaline

$950.00   €801  £690.00 approx.  

This specimen is priced in US dollars, all other prices are approximate.

ID: CC20144
The Tourmaline locality at Mwajanga in north-eastern Tanzania reportedly only contains the species Dravite from the Tourmaline group, although this occurs in a bewildering range of colours and crystal habits.  This rather splendid and elegant crystal, some 8 cm tall, is more than it first appears to be.   The opaque, intensely dark leafy-emerald green crystal appears jet black, even when back lit and on examination of the termination pinacoid surface, all evidence points to this being a twinned pair of crystals, but of such exact match and symmetry, are perceived as one single prism.  The pinacoidal face shows clears re-entrant angles in perfect symmetric alignment across the prism.  Although subtle, a vertical plane of symmetry can be seen down one prism face, which meets the re-entrant axis.  The species of Tourmaline is not specified but is most likely Dravite in accordance with the known mineralogy of this deposit.

Details

Dimensions
8.0 × 2.1 × 1.7 cm
Categories
Gem Minerals, Tourmaline
Locality
Mwajanga, Simanjiro District, Manyara Region, Tanzania, Africa

Minerals on Specimen

Minerals on specimen
Tourmaline

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