|
| |
| LOOSE
GREEN
TOURMALINE
NATURAL COLOR
Hardness
7.5 |
 |
|
5.27
cts Green tourmaline emerald cut
faceted
single
11.9
x 9.7 mm.
lightly included. Tone
scale: medium. Enhancement:
none (N)
stone PRICE
USD
498.00
ORIGIN: Madagascar
ref:Tge
527 
|
| Hardness: |
7
- 7.5 |
| Specific
Gravity: |
3.0+ |
Visual Catalog
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 Tourmaline
data
|
| 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 |
|
