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LOOSE RUBELLITE TOURMALINE   NATURAL COLOR    Hardness 7.5  
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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, marble and schists, placers.
Coloured tourmalines are related to sodolithic pegmatites.
One distinguishes two principal types of tourmalines: the hexagonal type and the triangular one.
2.52 cts. Oval rubellite tourmaline single

 

  x Pieces: 1 Rubellite x x Type: 100% Natural
 
  Color: Red-ruby   Shape: Oval faceted
                 
  Weight: 2.52 Carats   Size: 9.3 x 7.5 mm.
 
  Clarity: MI1   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.
 
This stone is slightly included. That means that its clarity is slightly altered, but its color is close to that of a ruby.
Stone Price: USD 504.00 

ref:Tro 252

 

Depth: 5.9 mm.

   
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- Scale determining the purity of a stone.  -
FL NFL SI1 SI2 MI1
Flaw less Near flaw less Slightly included 1 Slightly included 2 Medium included 1
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MI2 MI3 VI1 VI2 HI
Medium included 2 Medium included 3 Very included 1 Very included 2 Highly included
 
 
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