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LOOSE BROWN-COLA SPHENE          NATURAL COLOR          Hardness 5.0-5.5
Online Certificate
RETURN TO SPHENE
Chemical Composition: CaTiSiO5, Calcium Titanium
Crystal Structure: Monoclinic
Environment: Magmatic, metamorphic and hydrothermal rocks.
Name Origin: Titanite Named after its chemical composition of titanium.
This stone shows an exceptional capacity to restore the light, thanks in particular to its high 
refractive index, especially under not very enlightened condition.
38.91 cts. Octagon sphene single
  x Pieces: 1 Sphene x x Type:  100% Natural
 
  Color: Brown cola   Shape: Octagon faceted
                 
  Weight: 38.91Carats   Size: 25.9 x 14 mm
 
  Clarity: SI1   Luster: Excellent
 
  Treatment: None (N)   Origin: Madagascar
We use a  microscopic photography    Refr. Index: 1.885 - 2.050   Hardness 5.0-5.5
system. The actual gemstone is smaller than the images shown. Depth:10 mm.
White spots seen in photos are dust.
Stone Price:  USD 12768.00 

ref:TIbe 3891

 

 

 

 

 
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This is a virtual certificate compiled from the lab data for the gemstone being examined. Clarity is based on magnification
under a 10X corrected loupe. All gemology performed by GGGems. Jean & Alain Darbellay guaranteeing that this stone  
                        is 100% natural. Prices and availability are subject to change without notice.
   
  Color: Rich brown-cola With Rainbow Flashes  
  Clarity: Slightly included
  Luster: Good Luster
  Origin: Madagascar
  Hardness: 5 - 5.5
  Specific Gravity: 3.3 - 3.6   Visual Catalog
  Refractive Index: 1.885 - 2.050   Cutting Styles
  Chemical Composition: CaTiSiO5, Calcium Titanium Silicate   Ask a question
  Crystal Structure: Monoclinic
 
 
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