Black Moonstone Pebble Size 7-10 cm approximately Benefits: It harmonizes and regulates feminine energies, it is beneficial to the emotional work of relationships with the mother. The black moonstone relaxes the tensions of the lower abdomen by harmonizing this chakra. It is a stone which develops spiritual activity, stimulates our imagination and our intuition and which minimizes excessive reactions (anger) because it soothes the emotions It attracts happiness, (rids forms of negative thoughts).