The PETRONIUS bracelet consists of  earth stones such as lava rock, tiger's eye and sterling silver beads from Java. Tiger's Eye is known for its purifying effect. In difficult periods, tiger's eye can give strength en confidence and help with dilemmas and doubts. Tiger's eye promotes calm, helps with overstimulation_cc781905-5cde-3194-bben goes hyperventilation. But above all it is a very nice sturdy bracelet.  Diameter beads:  12 mm.