17" as standard but can be made to specific neck measurement.
Each crystal is one of a kind and has various colours running through it.
Amethyst - Provides serenity and aids a calming sleep free from nightmares. Amethyst carries a calming and serene energy that will help you unwind and relax. Promotes hormone balance, detoxifies the body and stress relief.
Being the crown chakra it reduces headaches, improves mental focus and sparks new ideas.