4mm beads 
Since the earliest of times, lapis lazuli has been associated with strength and courage, royalty and wisdom, intellect and truth. From antiquity, lapis lazuli has been worn in the belief that it will ward off evil. shield you against psychic assaults. Lapis Lazuli is one of the oldest spiritual stones known to man; used by healers, priests, and royalty, for power, wisdom, and to stimulate psychic abilities and inner vision. It represents universal truth. Lapis quickly releases stress, allowing for peace and serenity.
(Throat & 3rd EYE 👁️ CHAKRA)