3.5 cm. Tiger iron is a mixture of tiger eye, hematite and jasper. It strengthens concentration because it is a source of solid inner peace. Therefore, it also brings peace and strength into life. Due to the influence of acquired stability, we resist the harmful effects of the environment and the attacks of immature people. We are able to maintain the necessary distance, we get the strength to ensure peace at home and at work. this stone strengthens the respiratory system, relieves asthma. It activates the activity of the liver, excretion system, metabolism.