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SETS TOURMALINE              NATURAL COLOR               Hardness 7. 

Return to >> Set Double table tourmaline

 

68.60 cts. Set Double table sliced tourmaline 

Pair: 29.3 x 25.2 mm. single Tour.28.6 x 27 mm.

Moderately included.  Enhancement: none (N)

stone PRICE  

USD 549 .00

ORIGIN: Madagascar

  ref:SetdtT6860 

Hardness: 7 - 7.5

Growth zoning in a tourmaline crystal.

Specific Gravity: 3.0+
Refractive Index: 1.62 - 1.68
Chemical Composition: Na(Li,Al)3Al6Si6O18(BO3)3 (OH)4, Sodium Lithium Aluminum Boro-Silicate Hydroxide
Crystal Structure: Trigonal

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