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  TOURMALINE SLICE           NATURAL COLOR            Hardness 7.5

RETURN TO »» TOURMALINE SLICE

 

38 grs. Pair Slice polychromatic tourmaline 

 65.5 x 34 mm. (Stone found in alluvium.)

Moderately included.  Enhancement: none  (N)

Pair PRICE  

USD 944.00 

ORIGIN: Madagascar

   ref: PairTsl38gr   

 

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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