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GENUINE BLUE SAPPHIRE                                   Hardness 9

RETURN TO SAPPHIRE BLUE

Chemical properties:  corundum is composed of pure alumina; its colouring is due to metallic

oxide traces or inclusions. The color of sapphire, due to iron and titanium oxide, gives its best 
effect under daylight.  Electric light makes it often dark.
Gems are generally found in alluvium, but come either from basaltic slags, or from metamorphized marble.
7.53 cts. Genuine Oval blue sapphire single
         
  x Pieces: 1 Sapphire x x Type: Genuine
 
  Color: Dark Blue   Shape: Oval faceted
                 
  Weight: 7.53 Carats   Size: 13.2 x 10.7 mm.
 
  Clarity: NFL   Luster: Excellent
 
  Treatment: Heated (H)   Origin: Madagascar
Comment: Dark blue.   Refr. Index: 1.76-1.78   Hardness 9
There is no window.
Hand cut by one of  Depth:6.4 mm.
our masters lapidaries.
Step cut.        

Stone Price:  USD 2179.00 

ref:SAbo753

  

The SAbo753 do not shows any silky veil, it is eye clean, but at the loupe you can see an inclusion in the pavilion when you observe the stone up side down. This stone shows a commercial blue with greenish sparkles. 

The green sparkles are mixed with its intrinsic blue color and are visible on half of the stone when the sapphire is moving.

Let us say that the overall color of the stone is affected by a blue-green color. This sapphire is not a bi-color stone.

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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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