Onyx gemstones are believed to have remarkable grounding properties, so they are often used as healing crystals to balance emotions and restore energy equilibrium. In addition, black onyx is thought to increase a person's determination, assisting with the achievement of goals, and to help bearers remain steadfast and resolute when they are put to life's tests. Our onyx black gemstones are of the finest possible quality and are all natural tumbled gemstones that can be used for everything from rituals to reiki and chakra healing to jewelry making. One pound of the natural gems includes roughly 97 to 103 stones with the smallest pieces around 3/8 x 5/8 inches in size and the largest pieces measuring roughly 3/4 x 1 inches. 1/4 lb. package.