(Measurements by an amateur) Stones: Black Rutile Quartz, diameter 4mm Buckyball size: Diameter approximately 2.5cm Black rutile is said to improve luck in work, business, and competition. It removes distractions and enhances concentration on what needs to be done, allowing you to proceed calmly. It will increase your perseverance and give you the courage to overcome difficulties. Uses: Fullerenes are also called buckyballs. This crystal fullerene is recommended as one of the protective crystals to carry around, as it transforms negative energy into positive energy, and also as an interior item to place in the entrance or living room for purification. It is made of power stones with various meanings, so choose one according to your wishes and carry it as a charm, or decorate your room with your favorite color.