Lithotherapy Bracelet in Rock Crystal and Eye Nazar Boncuk The Nazar Boncuk eye is a lucky symbol. Dimensions: Length: 18 cm (other sizes available on request) Elasticated, it adapts its size to that of your wrist and can therefore be worn by the vast majority of adults. Bead diameter: 6mm. Each stone being unique, with its own characteristics, the bracelet you will receive may differ slightly from the one of the photo (darker or lighter). "Extra" quality tumbled stones: very hard, smooth. About STONE: This stone of the Quartz family is considered the most mighty of all. It is both a transmitter, a receiver and an amplifier of positive energies that will give you the strength to move forward and will protect you from bad external influences.