Ammonite provides for insight to the basis from which to start and allows one to retain the "whole picture" from conception to use. It is a protective stone, giving stability and structure to ones life.
Sardonyx:The stone of senses. It improves sensory perception and strengthens the parasympathetic nervous system. Helps prevent bronchitis and infections of the respiratory tract. It sharpens the mind. Helps the wearer confront the world with open eyes and