A natural amethyst crystal size 36mm x 17mm crystal on a 22" sterling silver link chain necklace.

Amethyst - 

A very protective stone that sharpens our awareness and connects us to the divine. This stone inspires and enhances your intuition and empowers your trust in the divine. The intuitive properties of this stone remove hesitation and fear out of deliberations one encounters during the day. Associated with purifying the mind and clearing out negative thoughts this stone creates a free space for spiritual wisdom to enter into and reside.

Found in Brazil, Mexico and Madagascar.