ACHROÏTE TOURMALINE        NATURAL COLOR            Hardness 7.5 

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5.38 cts. Achroïte tourmaline oval single 

11.7  x  10.1 mm. Depth: 7.7 mm.

Eye clean. Enhancement: none (N)

stone PRICE    USD 699.00 

ORIGIN: Madagascar

ref:AToo538  

 

    

 

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