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LOOSE FACETED BLUE SAPPHIRE                            Hardness 9

RETURN TO »» SAPPHIRE BLUE OVAL 2

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.
2.83 cts. Genuine Oval blue sapphire single
         
  x Pieces: 1 Sapphire x x Type: Genuine
 
  Color: Blue   Shape: Oval faceted
                 
  Weight: 2.83 Carats   Size: 9.2 x 7.2 mm.
 
  Clarity: MI1   Luster: Excellent
 
  Treatment: Heated (H)   Origin: Madagascar
Comment: nice medium blue.   Refr. Index: 1.76-1.78   Hardness 9
 
Step cut. Depth:5.2 mm.
 
         

Stone Price:  USD 2941.00

ref:SAbo283

      

 

 

 

 

 

 

 

 

 

 

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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
-------------------------------------------------------------------------------------------------------------------------------------------------------------------
MI2 MI3 VI1 VI2 HI
Medium included 2 Medium included 3 Very included 1 Very included 2 Highly included
Hardness: 9
Specific Gravity: 3.9 - 4.1
Refractive Index: 1.76 - 1.78   Visual Catalog
Chemical Composition: Al2O3, Aluminum Oxide Corundum data
Crystal Structure: Trigonal     Cutting Styles
   Sapphire Discovery    Ask a question
 
 
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