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  TOURMALINE SLICE           NATURAL COLOR            Hardness 7.5

RETURN TO »» TOURMALINE SLICE

  

30.02 cts. Polychrome tourmaline  Slice 

40.5  x 27.1 mm. Thickness : 22 mm.( the stone is cracked but not completely broken at the top)

Slightly included. Enhancement: none (N)  (Stone found in alluvium.)

stone PRICE   SOLD 

ORIGIN: Madagascar

  ref: Tsl3002  

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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