The riches of Madagascar in crystals are amazing and these are Mystic Merlinite Palm Stones. You can read more about healing properties of shape. This stone is geologically called gabbro.
Use a Mystic Merlinite Is a stone that will assist in aligning the chakras. And then it helps helps you to enter altered states of consciousness. It is considered magical in other words use it to link to and work with the elementals of the planet and other realms.
Dimensions are for one of mystic merlinite palm stones of type A (first 2 photos. B’s size is the next 2 photos.