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  TOURMALINE SLICE          NATURAL COLOR            Hardness 7.5

RETURN TO Set tourmaline slice

 

74.55 cts. Set polychromatic tourmaline Slice

 22.3 x 22 mm.

Moderately included.  Enhancement: none (N)

Set PRICE  (6pcs.)

USD 699.00

ORIGIN: Madagascar

ref:6pcs. Tsl set7455 

    set(6 pcs.): 74.55 cts.  

 

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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