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LOOSE GREEN TOURMALINE      NATURAL COLOR        Hardness 7.5 
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RETURN TO »» TOURMALINE GREEN
 

 6.41 cts. Green tourmaline faceted emerald cut Single 

 17.6 x 7.7 mm.

Almost eye clean. Tone scale: medium. Enhancement: none (N)

stone PRICE  USD 665.00 

ref:Tge641    ORIGIN: Madagascar 

    
 
   
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Tourmaline Discovery
Hardness: 7 - 7.5
Specific Gravity: 3.0+    Visual Catalog

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Tourmaline data

Refractive Index: 1.62 - 1.68
Chemical Composition: Na(Li,Al)3Al6Si6O18(BO3)3 (OH)4, Sodium Lithium Aluminum Boro-Silicate Hydroxide
Crystal Structure: Trigonal
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