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TOURMALINE SLICE NATURAL
COLOR Hardness
7.5 |
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Set
tourmaline slice
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305 grms.
Set polychromatic tourmaline Slice
89.5 x 68.8 mm.(Stone
found in alluvium.)
Moderately included.
Enhancement: none (N)
Set
PRICE (10pcs.)
USD 4150.00
ORIGIN: Madagascar 
ref:10pcs.
Tslset305gr 
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| 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 |
To purchase a stone from this site click to ORDER
These
stones where found in alluvium.
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