Chalcedony is also known as Milk-Stone for its translucent, milky effect. Chalcedony comes in many colors depending on the mineral inclusions. Chalcedony is a variety of Quartz that stimulates optimism and goodwill. It is used to bring tranquility to our lives. It alleviates hostility, making way for group stability. Chalcedony promotes mental stability and assists with analyzing information.