To hang on a chain, cotton or leather cord. -This is a blue kyanite pendant... Semi precious stone. 2.5 CM X 1 CM Very nice natural color CRYSTAL HEALING = emotional: Kyanite provides courage and strength morals. It keeps yourself in difficult times and helps to develop his own intuition. mentally: Kyanite helps develop its own personality, recognize negative influences. On the countertop physical = Kyanite is good for the following areas: eyes, ears, nose, nervous system.