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

3.01 cts. Green tourmaline emerald cut Single 

18.7 x 5.5 x 3.2 mm

  Eye clean. Enhancement: none (N) Untreated

stone PRICE  

 SOLD  

ORIGIN: Madagascar 

ref:GrToLe301     

Tourmaline Discovery
  
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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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