Amethyst
Amethyst is a violet variety of quartz often used in jewelry. Its color is due to irradiation, iron impurities, and the presence of trace elements.

Category: Quartz
Hardness: 7
Specific Gravity: 2.65
Luster: vitreous
Transparency: transparent
Crystal System: trigonal
Cleavage: none
Fracture: conchoidal
Composition: SiO₂
Typical Size: up to 30 cm geodes
Found In:
Albania

Uses:
- jewelry
- collecting
- decorative stone
Believed to promote calmness, clarity, and spiritual awareness.