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SET POLYCHROME TOURMALINE      NATURAL COLOR       Hardness 7.5 

RETURN TO   SET POLYCHROME TOURMALINE

 159.30 cts. set polychrome tourmaline cabochon

  58.9 x 26 Depth: 4.1 mm.

Moderately included. Enhancement: none (N)

set PRICE   

USD 2867.00 

ORIGIN: Madagascar

   ref:SetTpa15930  

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
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