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SET POLYCHROME TOURMALINE      NATURAL COLOR       Hardness 7.5 

RETURN TO »»  SET POLYCHROME TOURMALINE

 

 34.33 cts. set polychrome tourmaline 3 pcs

28.5 x 16.5 / 24 x 17 mm. Depth: 5.7 mm.

Moderately included.  Enhancement: none (N)

set PRICE  

USD 1544.00 

ORIGIN: Madagascar

   ref:setTpo3433  
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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