So you are in need of a little extra courage today? Clear yourself, your home or office and bring a bit of stimulating courage to confront situations in your life with the right Boosting Courage Stone Set. Stones have long been used to energize and stimulate the energy around us and our living spaces. Each set comes with four gemstones to help you in your everyday life. Stones vary in size and shape. Most measure approximately 1/2 - 1 inch.