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 TOURMALINE  CRYSTAL   NATURAL COLOR     Hardness 7.5  

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 120 grms.  Rubellite crystal on limestone matrix associated with quartz crystals. 

 7 x 6 cm. S:  17 x 7.8 mm glossy

  Enhancement: none (N) A very rare specimen.

stone PRICE  

 SOLD  

ORIGIN: Madagascar

ref:RTSir120g 

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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