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 alleviating issues witg the circulatory system, gallbladder and bones. Brown Chalcedony helps to alleviate feelings of anger and hostility, transforming them into calmness.