|
| |
|
| |
|
| |
|
| |
| Gemological
Information |
| Color
: |
a
wide range of colors |
| Refractive
Index: |
1.52-1.54 |
| Chemical
Composition: |
A
family of complex aluminosilicates
that are the most common minerals
in the Earth's crust |
| Hardness: |
6-6.5 |
| Crystal
Group: |
Monoclinic
or triclinic, depending on composition. |
| Ocurrence: |
Many
widely scattered locales, depending
on composition |
|
|
|
| |
|
453/1
HAVELOCK ROAD, COLOMBO 06, SRI LANKA.
TEL - +94 11 4527760, 5052185, 5050232 FAX - 2588912
Email : crescent@cresla.com |
|
| |
| |