4.5 x 4 cm. There is a lot of magnesium in the stone, so it strengthens bones and metabolism. It helps ensure emotional and mental balance, removes poisons from our body, balances bioenergetic currents. Quiet headache, rheumatism, back pain. It detoxifies the body and soul, thus leading to inner peace. It is favorable for all zodiac signs, strengthens digestion, willpower and determination. It's enough, you see. And if you help, miracles happen.