Chalcedony- a cristalline form of Silica with inclusions of Quartz- forms the basis for many other crystals, such as Agate, Heliotrope and Onyx. It is a very soothing, nurturing stone that aligns the mind and spirit to a harmonious state. Chalcedony can be beneficial in alieviating issues witg the circulatory system, gallbladder and bones. Green Chalcedony is often used to bring peace of mind to the user, particularly during meditation, and to encourage feelings of goodwill and friendship.