|
Chemical formula
|
SiO 2 |
|
Crystalline System
|
Trigonal, Hexagonal |
|
Class
|
Oxides |
| Origin | Antsirabe, Madagascar |
| Size |
Medium : 3.0-4.0cm Large : 4.0-5.0cm |
Whitish-transparent Quartz Point.
Quartz crystallizes in a trigonal shape forming points, when these are grouped on a flat surface they are called a "druse" and when that druse forms a cavity it is called a "geode".
The piece you receive may differ slightly from the photo shown, since the minerals are natural and no pieces are identical. The size is approximate.