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SET TOURMALINE SLICE NATURAL COLOR Hardness 7.5 |
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RETURN TO »» Set tourmaline slice
111.28 cts. Set polychrome tourmaline Slice
28.5 x 22.8 mm. Thickness : 2.1 mm.
Slightly included. Enhancement: none (N)
Set PRICE (8 pcs.)
SOLD
ORIGIN: Madagascar
ref: Tsl SET11128
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All of our tourmalines slices are polished on both sides.
Hardness: |
7 - 7.5 |
Growth zoning in a tourmaline crystal.
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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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