Howlite Stone.
Howlite is a calming stone and it can help its wearer to reduce their own levels of stress and anger, as well as anger that is directed towards them. Howlite absorbs negative energy and its calming qualities are thought to also help reduce insomnia as it relieves and unburdens an overactive mind
Natural gemstone, You will receive the similar item as picture shown, not exact one since stone is unique.