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CAB.GREEN TOURMALINE      NATURAL COLOR        Hardness 7.5  
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RETURN TO CAB GREEN TOURMALINE
Tourmaline chemical composition is (Na, Li,Ca) (Fe2, Mg, Mn, Al)3 Al6 I(OH)4 I (BO3)3ISi6O18I .
Crystaline system: Trigonal.
Occurences: In the acid magmatic rocks and associated pegmatites, limestones and schists, 
placers.
Coloured tourmalines are related to sodolithic pegmatites.
One distinguishes two principal types of tourmalines: the hexagonal type and the triangular one.
2.39 cts. Cab green tourmaline tourmaline single
  x Pieces: 1 Tourmaline x x Type: 100% Natural
 
  Color: Green   Shape: Oval
                 
  Weight: 2.39 Carats   Size: 10.5 x 6 x 5.1  mm.
 
  Clarity: SI1   Luster: Good
 
  Treatment: None (N)   Origin: Madagascar
We use a  microscopic photography system.   Refr. Index: 1.62-1.64   Hardness 7.5
The actual gemstone is smaller than the images shown.
 
                                                      Inclusions seen in photos will be less visible to the naked eye.
Stone Price: SOLD 

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