• Obsidian thumb stone, also called pocket or palm stone, with a polished groove for the thumb that makes it easy to use. • Rubbing the thumb over the groove helps relieve psychological stress and improve concentration. • Made of obsidian, with approximate dimensions of 3.4-3.6 cm in length, 2.4-2.6 cm in width, and 0.5-0.7 cm in thickness. Weight: 10 g. • Its smooth and cool texture allows it to be comfortably carried in bags, pockets, or wallets. • Helps reduce anxiety, stress, and adjust personal emotions. • Can be used as a massage stone and Gua Sha stone, helping to relax the muscles of the face, neck, and shoulders through gentle massage. • Healing crystals promote energetic cleansing, chakra balance, and inner healing. • Useful tool for yoga, meditation, crystal healing, and Reiki practices. • Rubbing the stone during meditation helps calm the mind, improve concentration, and facilitate entry into a deep meditative state. • It is a suitable spiritual gift for those seeking to reduce stress, anxiety, and attract well-being.