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SET TOURMALINEE-IOLITE     NATURAL COLOR      Hardness 7.5 

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  6.94 cts. Iolite & 7.92 cts.  Tourmaline kite cut single

 Iol.20x15 / To.20.5x13.6 mm.

Slightly included. Enhancement: none (N)

set PRICE

USD 1490.00 

ORIGIN: Madagascar

   ref:Set Mix/IO/TO1486  

Tourmaline:
Hardness: 7 - 7.5
Specific Gravity: 3.0+   Visual Catalog
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
Iolite:
Color: Tanzanite Purple Blue
Clarity: Slightly included.
Luster: Good Luster
Origin: Madagacar
Hardness: 7 - 7.5
Specific Gravity: 2.3
Refractive Index: 1.52 - 1.57
Chemical Composition: Mg2Al4Si5O18, Magnesium Aluminum Silicate
Crystal Structure Orthorhombic
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