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LOOSE OVAL IOLITE               NATURAL COLOR                Hardness 7.25
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RETURN TO »»   IOLITE
Chemical properties: Mg2Al4Si5O18, Magnesium Aluminum Silicate
6.40 cts. Oval Natural Iolite single
  x Pieces: 1 Iolite x x Type: 100% Natural
 
  Color: Blue   Shape: Oval faceted
                 
  Weight: 6.40 Carats   Size: 14 x 11.3 mm.
 
  Clarity: SI1   Luster: Excellent
 
  Treatment: None (N)   Origin: Madagascar
We use a  microscopic photography system.   Refr. Index: 1.53-155   Hardness 7.25
The actual gemstone is smaller than the images shown.
Stone Price:  USD 439.00 

ref:Ioo 640

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Color: Top Tanzanite Purple Blue
Clarity: Very slightly included
Luster: Good Luster
Origin: Madagacar
Hardness: 7 - 7.5
Specific Gravity: 2.3
Refractive Index: 1.53 - 1.55   Visual Catalog
Chemical Composition: Mg2Al4Si5O18, Magnesium Aluminum Silicate    Cutting Styles
Crystal Structure Orthorhombic   Ask a question

 

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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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