18.1g, 3.1cm. Adventurers, it brings a feeling of peace, well-being, freshness. It can gently stimulate the hormonal system and help release negative energies. It heals overall, green color helps it. It is not possible to step into the greenery of nature every time, but you can deal with such a permitted life-stimulator every day. A person plays with stones, stimulates acupressure points with a stick, and lo and behold, he feels good.