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LOOSE BI-COLOR TOURMALINE    NATURAL COLOR   Hardness 7.5 
Online Certificate
RETURN TO TOURMALINE BI COLOR

26.84 cts. White-red Tourmaline emerald cut Single. Very rare 

18 x 15.2 mm.  

Very rare, for collectors. Tone scale: medium.

  Moderately included for the material.  Enhancement: none (N)

        stone PRICE     

   SOLD     

ORIGIN: Madagascar

ref: Tbi 2684

This is a virtual certificate compiled from the lab data for the gemstone being examined. Clarity is based on magnification
under a 10X corrected loupe. All gemology performed by GGGems. Jean & Alain Darbellay guaranteeing that this stone  
                        is 100% natural. Prices and availability are subject to change without notice.
 
To purchase a stone from this site click to ORDER 
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
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