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 TOURMALINE OBJECT    NATURAL COLOR     Hardness 7.5  

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16.28 cts. Tourmaline Single 

 20.2 x 10.9 mm. Twin crystal triangular type.

Polychrome red-pink to copper-pink.

  Enhancement: none (N)

stone PRICE  

USD 190.00 

ORIGIN: Madagascar

ref:ObjTo1628c

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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