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  TOURMALINE  CRYSTAL   NATURAL COLOR     Hardness 7.5  

RETURN TO TOURMALINE CRYSTAL

  

 53.18 cts.  tourmaline crystal Single 

43.6  x 12.2 mm. White head

  Enhancement: none (N)  Hexagonal type

stone PRICE  

USD 207.00 

ORIGIN: Madagascar

ref:Tr5318c 

Hardness: 7 - 7.5
Specific Gravity: 3.0+
Refractive Index: 1.62 - 1.68 Tourmaline data
Chemical Composition: Na(Li,Al)3Al6Si6O18(BO3)3 (OH)4, Sodium Lithium Aluminum Boro-Silicate Hydroxide    Ask a question
Crystal Structure: Trigonal   Gem-O-Scope
 
    
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