Amethyst and Agat pendant

Amethyst beads and Agat square shape pendant.
Amethyst is the more coveted stone in the Quartz familly.
It's a talisman wich protect against exhilaration.
Its name comes from the greek "amathustein".
Hardness on the MOHS's level: 7. Density: 2.63-2.65.